List two things you should not do when encountering a funeral procession?
Answers
party and being happy..........
Related Questions
Which type of force is a noncontact force?
Answers
-Gravitational force.
-Magnetic force.
-Electrostatics.
-Nuclear force.
Hope this helps! :)
Answer:The answer is C: any fundamental force
Explanation:
A P E X
To lift a baby from a crib 50 J of work is done. How much power is needed if the baby is
lighted in 0.5s?
Answers
Answer:
Power = 100 Watts
Explanation:
Given the following data;
Workdone = 50 Joules
Time = 0.5 seconds
To find the power needed;
Power can be defined as the energy required to do work per unit time.
Mathematically, it is given by the formula;
\( Power = \frac {workdone}{time} \)
Substituting into the formula, we have;
Power = 50/0.5
Power = 100 Watts
I’ll literlly give you points
and make you brainiest
Answers
Answer:
a
Explanation:
A 9-1-1 operator needs to have
advanced knowledge in which area in
order to properly do their job?
A. geography
C. mathematics
B. economics
D. history
Answers
Answer:
B. economics
Explanation:
An understanding of economic principles can help a 911 operator understand the root causes of many different emergencies, such as poverty, drug abuse, and domestic violence, and help them be more effective at dispatching resources to help those in need. Furthermore, a basic understanding of economics can provide context for some types of emergencies, such as natural disasters or workplace accidents related to unsafe working conditions. However, while having an understanding of economics is helpful, it's not mandatory for 911 operators to perform their jobs effectively. They ultimately need to be skilled in communication, risk assessment, and decision-making to ensure that people receive the assistance and resources they need in an emergency situation.
what did jeff make to convert solar energy into electricity?
Answers
Jeff has created a device that can convert solar energy into electricity. This innovative technology harnesses the power of sunlight to generate electrical energy, providing a sustainable and renewable source of power.
Determine the Jeff's device?Jeff's device utilizes photovoltaic cells to convert solar energy into electricity. Photovoltaic cells, commonly known as solar cells, are made of semiconducting materials, such as silicon, that can absorb photons from sunlight.
When sunlight hits the solar cell, it excites electrons within the material, creating an electric current. The photovoltaic cells are arranged in a panel or module, which can be connected in series or parallel to achieve the desired voltage and current levels.
To optimize the conversion of solar energy, Jeff's device may include additional components, such as a charge controller, which regulates the charging of batteries or the direct usage of electricity.
It may also feature an inverter to convert the direct current (DC) produced by the solar cells into alternating current (AC), suitable for powering appliances and feeding into the electrical grid.
Overall, Jeff's device harnesses the photovoltaic effect to transform solar energy into a usable form of electricity, providing a sustainable and renewable energy source.
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Damaging effect of sewage dumps on human health
Answers
Answer:
Damaging effects of sewage dumps on human health include Cholera, Typoid and Dysentery.
Explanation:
Life-threatening human pathogens carried by sewage include cholera, typhoid and dysentery. Other diseases resulting from sewage contamination of water include schistosomiasis, hepatitis A, intestinal nematode infections, and numerous others.
Una caloría (cal) es la cantidad de transferencia de energía necesaria para elevar la temperatura de 1 g de agua de 14,5 °C a 15,5 °C.
Answers
Answer:
Verdadera.
Explanation:
La caloría se puede definir como una unidad estándar utilizada para medir la cantidad de energía presente en un organismo vivo.
Una caloría (cal) es la cantidad de transferencia de energía necesaria para elevar la temperatura de 1 g de agua de 14,5 °C a 15,5 °C.
Generalmente, es una unidad de medida de energía e igual a 4,1855 julios.
a ball rolls off the edge of a table 1.44m above the floor and strikes the floor at a point 2m horizontally from the edge of the table. what is the time the ball was in the air?
Answers
Answer:
t = 0 1.697 seconds
Explanation:
Comment
This is a standard question where the time is the same for both the vertical distance the ball has to drop and the time it takes to go horizontally.
Formulas
dv = vi*t + 1/2 a t^2
dv is the vertical distance that the ball has to travel in a downward direction
vi is the initial vertical velocity. (which is zero.) t is the time it takes to hit the floora is the gravitational accelerationdh = vh * t
dh is the horizontal distancevh is the horizontal velocityt is the same time as the above formulaGivens
a = 9.81
dv = 1.44
vi = 0
t = ?
dh = 2 m
t = same as above (but not given)
Solution
dv = 1/2 a * t^2
1.44 = 1/2 * 9.81 *t^2 Multiply by 2
2*1.44 = 1/2 * 2 * t^2
2.88 = t^2
t = 1.697 seconds
Note that you do not have to use the horizontal information to get the time. You only have to realize that the ball has no vertical velocity to begin with.
1. If a silkworm can produce 24 inches of silk every 15 minutes, how long will it take to
produce enough silk for a scarf, which requires 45 meters of silk? (1m = 39.37 in)
Answers
Answer:
11 hours and 15 minutes.
Explanation:
I did the math and that was my answer.
4. The average lifetime of the tau lepton is 2.906 x 10^-12 seconds and the average lifetime of
the neutral pion is 8.4 x 10^-17 seconds. Which subatomic particle has a longer lifespan and
by approximately how many times longer. Show your work and answer in a complete
sentence.
Answer:
Answers
To determine which subatomic particle has a longer lifespan, we compare the average lifetimes of the tau lepton and the neutral pion. The average lifetime of the tau lepton is 2.906 x 10^-12 seconds, and the average lifetime of the neutral pion is 8.4 x 10^-17 seconds.
Comparing these values, we can see that the average lifetime of the tau lepton (2.906 x 10^-12 seconds) is significantly longer than the average lifetime of the neutral pion (8.4 x 10^-17 seconds).
To calculate how many times longer the lifespan of the tau lepton is compared to the neutral pion, we divide the average lifetime of the tau lepton by the average lifetime of the neutral pion:
(2.906 x 10^-12 seconds) / (8.4 x 10^-17 seconds) = 3.453 x 10^4
Therefore, the tau lepton has a lifespan that is approximately 3.453 x 10^4 (34,530) times longer than the neutral pion.
The launch speed of a projectile is three times the speed it has at its maximum height.what is the elevation angle at launch?
Answers
Answer:
Given: a projectile of initial launch velocity(V) and launch angle ∅ and no air resistance. At the maximum height, the projectile would have a zero contribution of speed from the vertical component(Vy) Therefore, if we say Vx=Vcos∅ is the only speed the projectile has at the instant of maximum height then we can replace Vx with 1/5V and write 1/5V=Vcos∅. Solving for the the launch angle ∅, gives Inverse Cos(1/5)=78.5 degrees.
Why is the heliocentric model not correct
Answers
Answer:
Um, wrong.
Explanation:
The Helioentric model is correct. We orbit the sun. The GEOcentric model is incorrect. The Universe does not orbit the Earth. What are you learning?
what is the baseline that astronomers use to measure the parallax (the distance) of the nearest stars? group of answer choices
Answers
Astronomers use the baseline of the Earth's orbit around the Sun to measure the parallax and determine the distance of the nearest stars. As the Earth moves around the Sun, astronomers observe the positions of nearby stars at different times of the year. By measuring the shift in the position of the star against the background of more distant stars, they can calculate the angle of the parallax.
This angle, combined with the known distance between the Earth and the Sun, forms the basis for the calculation of the star's distance from Earth. The closer the star, the larger the angle of the parallax. Astronomers have used this method to determine the distances of many nearby stars, allowing them to create a 3D map of the galaxy and study its structure and composition.
The baseline that astronomers use to measure the parallax (the distance) of the nearest stars is Earth's orbit around the Sun. This baseline provides a large enough distance to accurately measure the parallax angles for nearby stars. Astronomers use this method by observing the star's position from two points in Earth's orbit, six months apart, and then calculating the parallax angle.
By using the parallax angle and the known baseline distance (1 astronomical unit), they can determine the distance to the star using the parallax formula. This method is essential in measuring distances to stars within a few hundred light-years of Earth, and it serves as a fundamental tool in understanding the scale of our galaxy and the universe.
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An object is experiencing an acceleration of 9.0 m/s? while traveling in a circle at a velocity of
6.2 m/s. What is the radius of its motion?
Answers
Answer:
4.27m
Explanation:
Recall that for uniform rotational motion,
the formula for centripetal acceleration is given as
Centripetal acceleration = ( velocity)² / radius
in our case we are given :
Centripetal acceleration = 9.0 m/s²
velocity = 6.2 m/s
substituting these into the formula:
9.0 = 6.2² / radius
radius = 6.2² / 9.0 = 4.27m
an egg falls from a nest at the height of 3.0 m wheat speed will it have when it is 0.50 m from the ground
Answers
Using conservation of energy, we can equate the initial potential energy of the egg to the final kinetic energy just before it hits the ground:
mgh = (1/2)mv^2
where m is the mass of the egg, g is the acceleration due to gravity (9.81 m/s^2), h is the initial height of the egg (3.0 m), and v is the speed of the egg just before it hits the ground.
Solving for v, we get:
v = sqrt(2gh)
Plugging in the given values, we get:
v = sqrt(2 x 9.81 m/s^2 x 3.0 m) = 7.67 m/s
So the speed of the egg when it is 0.50 m from the ground is approximately 7.67 m/s.
what is ohms law of a resistor?
Answers
Answer:
La Ley de Ohm muestra la relación que existe entre una resistencia, la tensión o voltaje en sus terminales y la corriente que pasa a través de ella.
Explanation:
An object is a regular, rectangular, solid with dimensions of 2 cm by 3cm by 2cm. It has a mass of24 g. Find its density
Answers
Answer:
Density = mass
volume
volume = area * length
volume = 2*3*2
volume = 12 cm³
then,
Density = 24g
12cm³
Density = 2g/cm³
Determine the present value of the following single amounts (FV of $1, PV of $1, FVA of $1, PVA of $1, FVAD of $1 and PVAD of $1)
FV= $20,000 I=7% N=10 PV= ?
FV= $14,000 I=8% N=12 PV= ?
FV= $25,000 I=12% N=20 PV= ?
FV= $40,000 I=10% N=8 PV= ?
Answers
The present value of the following single amounts are as follows;
PV for FV = $20,000, I =7%, N =10 years is $10,155.84
PV for FV = $14,000, I =8%, N =12 years is $4,489.92
PV for FV = $25,000, I =12%, N =20 years is $2,590.11
PV for FV = $40,000, I =10%, N =8 years is $18,520.89.
Future value (FV) =$20,000,
Interest rate (I) =7%,Time (n) = 10 years
The present value (PV) can be calculated as follows;
PV = FV / (1 + i)n = 20000 / (1 + 0.07)10PV = 20000 / 1.96715PV = $10,155.84
Future value (FV) =$14,000,
Interest rate (I) =8%,
Time (n) = 12 years
The present value (PV) can be calculated as follows;
PV = FV / (1 + i)n = 14000 / (1 + 0.08)12PV = 14000 / 3.12159PV = $4,489.92
Future value (FV) =$25,000,
Interest rate (I) =12%,Time (n) = 20 years
The present value (PV) can be calculated as follows;
PV = FV / (1 + i)n = 25000 / (1 + 0.12)20PV = 25000 / 9.64632PV = $2,590.11
Future value (FV) =$40,000,Interest rate (I) =10%,Time (n) = 8 years
The present value (PV) can be calculated as follows;
PV = FV / (1 + i)n = 40000 / (1 + 0.1)8PV = 40000 / 2.15893PV = $18,520.89
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Three liquids are at temperatures of 9˚C,
20°C, and 38°C, respectively. Equal masses of
the first two liquids are mixed, and the equi-
librium temperature is 16°C. Equal masses of
the second and third are then mixed, and the
equilibrium temperature is 32.1°C.
Find the equilibrium temperature when
equal masses of the first and third are mixed.
Answer in units of °C.
Answers
When the first two liquids are mixed, the heat lost by the warmer liquid is equal to the heat gained by the cooler liquid. Using the formula for heat transfer:
(m * c2 * (16°C - 20°C)) = (m * c1 * (20°C - 9°C))
Simplifying this equation gives:
-4m c2 = 11m c1
Dividing both sides by m and rearranging:
c1/c2 = -4/11
When the second and third liquids are mixed, we can use the same formula:
(m * c2 * (32.1°C - 20°C)) = (m * c3 * (38°C - 32.1°C))
Simplifying this equation gives:
12.1m c2 = 5.9m c3
Dividing both sides by m and using the ratio we found earlier:
c3/c2 = 12.1/5.9 * c1/c2 = (12.1/5.9) * (-4/11) = -1.6
Now we can use the same formula again to find the equilibrium temperature when the first and third liquids are mixed:
(m * c1 * (T - 9°C)) = (m * c3 * (38°C - T))
Simplifying this equation gives:
29m c1 + m c3 T = 342m c3
Dividing both sides by m and using the ratio we found earlier:
29c1 - 1.6c3 = 342c3
Solving for T:
T = (29c1 - 342c3) / 1.6c3
Substituting the specific heat ratios we found earlier:
T = (29 - 342c3/c1) / 1.6
Substituting c3/c1 = -11/4 from the first ratio we found:
T = (29 + 342/4) / 1.6 = 61.44°C
Therefore, the equilibrium temperature when equal masses of the first and third liquids are mixed is 61.44°C.
i. What is the elasticity at point \( g \) ? ii. What is the elasticity at point \( h \) ? (As a first step, determine what the quantity is equal to at \( h \) )
Answers
i. The elasticity at point \( g \) is the measure of responsiveness or sensitivity of a quantity to changes in another variable at point \( g \).
ii. To determine the elasticity at point \( h \), we first need to establish what quantity we are referring to at point \( h \). Once we have identified the relevant quantity, we can then calculate its elasticity by measuring the responsiveness or sensitivity to changes in another variable at point \( h \).
i. To determine the elasticity at point \( g \), we need specific information about the variables and their relationship. Elasticity is typically calculated as the percentage change in one variable divided by the percentage change in another variable.
ii. Without additional information about the specific variables and their relationship at point \( h \), it is difficult to provide a precise answer. The concept of elasticity requires specific context and variables to be defined in order to calculate or describe it accurately.
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A truck has a velocity of 25 m/s and a momentum of 25.000 kg*m/s. What is its
mass?
Answers
Answer:
1000kg
Explanation:
We can use the equation "p=mv"
p is the momentum in kg m/sm is the mass measured in kgv is the velocity measured in m/sIf we rearrange the equation to find mass (m), then the equation becomes:
m=p/v
We can substitute in the values of p and v as they are already given in the question.
p=25,000 kg m/sv= 25 m/sSo, now we just substitute in the values to get our answer.
m=p/v
m=25,000/25
m=1000kg
A plane flying horizontally at 390 m/s releases a package at an altitude of 15, 509m How long will the package take to reach the ground?
Answers
Answer:
40 seconds. 15,509/390=40.
P.s.
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In the simulation, select the pressure tab, then select the right-most of the three reservoir configurations (top left). By putting weights into the small column of water and using the pressure gauge to measure the water and air pressure, estimate the cross-sectional area of the left column of water. Which of the following best represents the cross-sectional area
Answers
The volume of any rectangular solid, including a cube, is calculated mathematically as V = l × w × h
How to find a cross-sectional area?In a given calculation, if you are given the:
Length WidthHeightTo find this, you would have to use the area of its base which is:
Length * Width * Height.
Furthermore, if the cross-section is parallel, then you would have to solve it thus:
Length * Width which is the area of the section from top to bottom.
Although your question is incomplete, the general idea of how to find the cross-sectional area of the volume of any rectangular solid.
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How is the answer D?
Answers
The graph that corresponds to 0.1 s in one complete cycle is graph D.
option D is the correct answer.
What is the period of a wave?The period of a wave is the time for a particle on a medium to make one complete vibrational cycle. Period, being a time, is measured in units of time such as seconds, hours, days or years.
Also, the period of a wave is the amount of time it takes for a wave to complete one wave cycle or wavelength.
From the given parameter, the coil rotates 10 times in one second. The period of the coil is calculated as;
Period = 1 s / 10
Period = 0.1 s
From the graphs, the only option that has one complete cycle in one second is option D.
Check option D, half cycle is 0.05 s and one full cycle is 0.1 s.
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A truck accelerating at 0.0083 meters/second2 covers a distance of 5.8 × 104 meters. If the truck's mass is 7,000 kilograms, what is the work done to reach this distance?
A. 1.7 × 106 joules
B. 3.4 × 106 joules
C. 5.6 × 106 joules
D. 6.8 × 106 joules
Answers
A truck accelerating at 0.0083 meters/second2 covers a distance of 5.8 ×\(10^4\) meters. If the truck's mass is 7,000 kilograms, the work done to reach this distance is 3.3× \(10^6\) joules.
The correct answer is option E.
To calculate the work done by the truck to cover a distance of 5.8 × \(10^4\)meters, we need to use the equation for work:
Work = Force × Distance
In this case, the force can be calculated using Newton's second law:
Force = mass × acceleration
Where:
Acceleration (a) = \(0.0083 meters/second^2\)
Distance (d) = 5.8 ×\(10^4\) meters
Mass (m) = 7,000 kilograms
First, let's calculate the force exerted by the truck:
Force = mass × acceleration = (7,000 kg) ×\((0.0083 meters/second^2)\)= 57.1 Newtons
Next, we can calculate the work done:
Work = Force × Distance = (57.1 N) × (5.8 × 10^4 meters) = 3.3158 × \(10^6\)joules
Rounded to the nearest significant figure, the work done by the truck is approximately 3.3 × \(10^6\) joules.
Therefore, the correct answer is E.
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The question probable may be:
A truck accelerating at 0.0083 meters/second2 covers a distance of 5.8 ×\(10^4\)meters. If the truck's mass is 7,000 kilograms, what is the work done to reach this distance?
A. 1.7 × \(10^6\) joules
B. 3.4 ×\(10^6\) joules
C. 5.6 × \(10^6\)joules
D. 6.8 × \(10^6\)joules
E. 3,3 ×\(10^6\) joules
When light hits a surface it usually bounces off at a larger angle. True or false? Justify
Answers
Answer:That only applies to highly polished surfaces, eg mirrors.
If you take a high quality laser (ie with low divergence) and aim it at a wall, you can see the spot where the laser beam reaches the wall from anywhere with a direct line-of-sight to the spot where the laser beam reaches the wall. This due to micro imperfections on the surface of the wall. At a microscopic level, the wall surface is very rough and pointing in all directions.
As to why, a beam of light bounces of a highly polished surface, I can only surmise that it is essentially due to kinematics, ie the only force opposing the light beam is normal to the surface, hence there no forces along the reflective surface. Since there are no forces along the reflective surface, the speed component of light along the reflective surface remains unchanged. However, on the plane perpendicular to the reflective surface the, the light photons bounce off at the same speed at which the hit the reflective surface because the mass of the reflective surface is much much much larger than the mass of the photons, which means that the reflective surface won’t move at all. Since conservation of momentum requires that momentum after the collision be the same as the momentum before the collision then the only way for that to happen is if the velocity of the photon perpendicular to the reflective surface is of exactly the same magnitude but in the opposite direction. Vector resolution of the speed component of the reflected beam means that the angle of reflection must be the same as the angle of incidence.
Explanation:
The mass of the beam is 3480kg
Calculate the weight of the beam. Remember that a mass of 1 kg has a
weight of 10 N.
Answers
Answer:
34800N
Explanation:
weight = mass × gravitational field strength
w=mg
w= 3480×10. (Gravitational field strength is constant at the value of 10)
w=34800N
a. your friend's ball converts all of its initia
energy into kinetic energy.
b. Your ball is in the air longer, which result
in a greater changing in the kinetic
energy.
c. The changing in gravitational potential
energy is the same for each ball, which
means that the change in kinetic energ'
must also be the same.
Answers
The change in gravitational potential energy is the same for both balls, leading to the conclusion that the change in kinetic energy must also be the same.
a) The ball will have maximum kinetic energy.
When all the initial energy of the ball is converted into kinetic energy, the ball will have the maximum possible kinetic energy. This occurs when the ball is released from a height and falls to the ground without any loss of energy due to friction or air resistance.
The ball will be moving at its maximum speed when all its initial energy is converted into kinetic energy.
b.The ball will experience a greater change in kinetic energy.
The amount of kinetic energy of a moving object is proportional to its velocity squared. Therefore, if the ball is in the air longer, it will have more time to accelerate due to the force of gravity and gain more velocity, resulting in a greater change in kinetic energy.
A longer duration in the air will result in a greater change in kinetic energy for the ball.
c. The change in kinetic energy must be the same for both balls.
The change in gravitational potential energy of a ball that is dropped from a certain height is determined by the height of the drop and the gravitational field strength. Since the height and gravitational field strength are the same for both balls, the change in gravitational potential energy will be the same.
According to the law of conservation of energy, the change in gravitational potential energy must be equal to the change in kinetic energy. Therefore, the change in kinetic energy must be the same for both balls.
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In the space provided, sketch and label a graph of the angular velocity as a function of time, including labels on the axes, standard units, a title, and if applicable, any significant numerical values.
Answers
Theta = position angle, t = time, and w = angular velocity, where w = angular velocity, theta = position angle, and t = time. Angular velocity is the rate of change of an object's position angle with respect to time.
Thus, An object's rate of rotation and direction of rotation are both described by its angular velocity.
It is customary for the positive direction to be in the counterclockwise direction. Here are some angular velocity issues for practice. The ratio of the angular displacement () to the time of motion, for a constant angular velocity, is the angular velocity.
Angular velocity only applies to things that are moving in a circular motion, making it less frequent than linear velocity.
A racecar on a circular track, a roulette ball on a wheel, or a Ferris wheel are a few examples of objects with angular motion.
Thus, An object's rate of rotation and direction of rotation are both described by its angular velocity.
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Could you please help me with this question