the generation of heat from the sun drives the hydrologic cycle by providing the energy for the evaporation of water from various water sources on the planet's surface. True or False

Answer:

Explanation:

distance while accelerating

d = ½at² = ½(0.15)7.0² = 3.675 m

velocity at the end of 7 s

v = at = 0.15(7.0) = 1.05 m/s

distance at constant velocity

d = vt = 1.05(64) = 67.2 m

distance while decelerating

d = ut + ½at² = 1.05(2.1) + ½(-0.50)2.1² = 1.1025 m

velocity at the end of deceleration

v = u + at = 1.05 + (-0.5)2.1 = 0 m/s

total distance traveled

d = 3.675 + 67.2 + 1.1025 = 71.9775 m

rounding to the two significant figures of the question numerals

d = 72 m

that's a HUGE pharmacy.

Answer:

A) vectors: veloicty, force

scalar:  speed, work

B)  t = 1.75 s,  C)   v = - 17 2 m / s

Explanation:

We answer each part separately

A) A vector magnitude has magnitude and direction instead a scalar magnitude has only magnitude

vector quantities: the speed of a car number is the magnitude and direction is where it goes

Force, the number is the magnitude and above that applies gives direction

Scalar magnitude: how quickly the number of the speedometer of the car

Temperature, work

B) I = 15 m height to the soil and get to calculate time = 0

        y = y₀ + v₀ t - ½ g t²

as the ball is loose its initial velocity is zero

       0 = 0 +0  - ½ g t²

       t = \(\sqrt{2y_o/g}\)

       t = \(\sqrt{2 \ 15/ 9.8}\)

       t = 1.75 s

C) the velocity to the reach the floor

      v = vo - g t

      v = 0 - g t

      v = - 9.8 1.74

       v = - 17 2 m / s

The negative signt iindicates that the speed goes down

A set of coordinates on a map grid are called coordinate grid or grid squares.

The quadrants in which ordered pairings, or coordinates, are established typically have two or more intersecting lines. Coordinates are also used in maps.

Eastings and Northings, two types of grid lines, are what make up the grid squares you see on maps. Both Easting and Northing grid lines are numbered from west to east and from south to north, respectively. The vertical lines that separate the map's west and east halves are known as eastings.

GPS coordinates, which are frequently stated in alphanumeric characters, can be used to uniquely identify a specific geographic place on the planet. In this context, coordinates refer to the points where a grid system intersects. Typically, GPS coordinates are written as a combination of latitude and longitude.

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your answer would be C

by forcing air to move faster over the top of the wing thus creating higher pressure below the wing and lower pressure above the wing

hope this helped you- have a good day bro cya)

Nuclear power plants have backup generators to ensure that essential equipment, such as cooling systems, can continue to function in the event of a power outage or other emergency.

Nuclear power plants rely on a constant supply of electricity to operate the equipment that controls the nuclear reaction and cools the reactor. If the power supply is interrupted, the reactor can overheat and damage can occur. Backup generators provide power to essential equipment, such as cooling systems, that keep the reactor and spent fuel pools from overheating.  If the backup generators fail, there is a risk of a nuclear accident, as was seen in the disaster in 2011, where the failure of backup generators led to a loss of cooling and a major nuclear incident.

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The linear speed will be the insect be 0.5759 meter/second carried collision with the near stationary photograph.

Speed is distance travelled by the object per unit time. Due to having no direction and only having magnitude, speed is a scalar quantity With SI unit meter/second.

Given that an insect lands 0.1m from the center of the turn table.

Rotational speed of the turn table = 55 rev/min

= (55×2π/60) rad/second

= 5.759 rad/second.

Hence, the speed of the insect be = Rotational speed × length

= 5.759 rad/second × 0.1 M.

= 0.5759 meter/second.

Therefore, the speed of the insect be 0.5759 meter/second.

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The graph that shows the relationship between the speed and the kinetic energy is option B.

Recall that the kinetic energy is referred to as the speed that a body possess by virtue of its motion. Thus an object that is in motion is said to posses the kinetic energy.  The kinetic energy is the energy of an object that has a velocity

The kinetic energy is linearly related to the speed of the object. This implies that the speed is directly proportional to the kinetic energy of the object. If there is a direct relationship, it the follows that the graph of the speed against the kinetic energy of the object ought to be a straight line graph.

As such, the relationship between the kinetic energy and the speed of the object can be seen from the image in option B.

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The shear stress involved when a 10-km layer of this rock is sheared through a distance of 5.0 m is 7.5 x 10⁶ Pa.

To calculate the shear stress, we can use the equation:

τ = G × γ

where τ is the shear stress, G is the shear modulus, and γ is the shear strain.

First, let's calculate the shear strain:

γ = Δx / h

where Δx is the distance the layer is sheared through (5.0 m), and h is the thickness of the layer (10,000 m).

γ = 5.0 m / 10,000 m = 5.0 x 10^-4

Now we can calculate the shear stress:

τ = G × γ

τ = (1.5 x 10^10 Pa) × (5.0 x 10^-4)

τ = 7.5 x 10^6 Pa

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The final velocity of the two balls after collision is 1.7 m/s and the direction is 45⁰.

The given parameters;

   mass of the first clay ball, m₁ = 20 g = 0.02 kg

   initial velocity of the first clay ball, u₁ = 3 m/s

   mass of the second clay ball, m₂ = 30 g = 0.03 kg

   initial velocity of the second ball, u₂ = 2 m/s

The initial momentum of the fist ball is calculated as follows;

                               P₁ = m₁u₁

                                  P₁ = (0.02)(3)

                                 P₁ = 0.06 kg.m/s

The initial momentum of the second ball is calculated as follows

                                      P₂ = m₂u₂

                                        P₂ = (0.03)(2)

                                         P₂ = 0.06 kg.m/s

The resultant initial momentum of the two balls is calculated as follows;

Apply the principle of conservation of momentum, to determine the final velocity of the two balls;

The direction of the two ball's velocity is calculated as follows;

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According to research, development is always towards complexity.

The term research has to do with the process that we have to go through to obtain new knowledge or to confirm a piece of information. Let us say that we have some disconnected pieces of evidence that tend to point towards a particular fact, we would need to use the process of research to establish the truth in the research.

Now we can see that there is a movement towards the complexity of organisms at each particular level in the developmental process. We can then conclude that according to research, development is always towards complexity.

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In the parallel combination, the current through R3 is 3 A. In the series combination, the current through R3 is 0.75 A.

To determine the current through resistor R3 in both the parallel and series combinations, we need to apply Ohm's Law and the appropriate formulas for calculating total resistance and current in each configuration.

First, let's consider the parallel combination:

In a parallel combination, the voltage across each resistor is the same. Therefore, the voltage across R3 is also 90 V.

Using Ohm's Law (V = I × R), we can calculate the current flowing through R3 in the parallel combination:

I_parallel = V / R3

= 90 V / 30 Ω

= 3 A

So, in the parallel combination, the current through R3 is 3 A.

Now, let's consider the series combination:

In a series combination, the total resistance is the sum of the individual resistances:

R_total = R1 + R2 + R3

= 60 Ω + 30 Ω + 30 Ω

= 120 Ω

To find the current through the series combination, we can use Ohm's Law:

I_series = V / R_total

= 90 V / 120 Ω

= 0.75 A

Therefore, in the series combination, the current through R3 is 0.75 A.

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Note the complete questions is User

90 V R₁=60 R2=  30, R3 = 30

Based on the circuit above, what would be the current through the R3 resistor in parallel and in series combinantion.

The height that will illustrate the distance will be d = 6.36m

Based on the information given, the length of the vine will be:

L = ✓(16² + 27.7)²

L = 32m

The velocity of Jane when she reaches position B will be:

V = ✓2gh

V = ✓(2 × 9.8 × 4.3)

V = 9.18m/s

We will apply the conversation of momentum. This will be:

50 × 9.18 = (50 + 80)V1

V1 = 3.53m/s

Therefore, the height that will illustrate the distance will be:

31.36² + d² = 32²

d² = 32² - 31.36²

d = 6.36m

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The statement best describes the primary difference between scientific investigation and technological design is Scientific investigation involves experiments, and technological design involves products. Option D

It can be said that both scientific investigation and technolgical design require problem-solving, creativity, and rigorous methods.

However, both of them have different objectives. While Scientific investigation seeks to expand knowledge and understanding of the natural world. Research involvs hypothesis testing and different experiments;

on the other hand, Technological design, wants to create or improve products, processes, or systems to meet specific needs or solve particular problems.

It can then be defined as the application of scientific knowledge for practical purposes.

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Answer:

B. Reaction Time

Explanation:

Reaction Time is the amount of time it takes to respond to anything.

Answer:

The graph of the velocity of an object in free fall would look like a straight line sloping downward. As the object falls, its velocity increases at a constant rate, so the graph of its velocity versus time will be a straight line with a negative slope. This is because acceleration due to gravity is a constant -9.8 meters per second squared, so the velocity of a free-falling object will increase by 9.8 meters per second every second.

Therefore, the graph that shows the change in velocity of an object in free fall is a straight line with a negative slope. Here is an example of such a graph:

Free Fall Velocity Graph

According to Chargaff's rule, the amounts of adenine (A), thymine (T), and guanine (G) in the DNA molecule are equal to each other. The amounts of cytosine (C) and guanine (G) are also equal.

Erwin Chargaff was a biochemist, author, Bucovinian Jew who immigrated to America during the Nazi era, and professor of biochemistry at Columbia University's medical school.

Chargaff found patterns among the four bases, or chemical building blocks, of DNA, which are directly related to DNA's function as the genetic material of living things.

He was born in Austria-Hungary. Heraclitean Fire: Sketches from a Life Before Nature, an autobiography he penned, received positive reviews.

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If a component obeys Ohm’s Law, then decreasing the temperature of a material will decrease the resistance.

According to Ohm's Law, the resistance of a conductor is directly proportional to its temperature, and inversely proportional to its cross-sectional area and the length of the conductor.

However, for most conductors, the change in resistance due to a change in temperature is relatively small, and can be approximated using the temperature coefficient of resistance (TCR) of the material. The TCR is a measure of how much the resistance of a material changes per degree change in temperature.

In general, for metallic conductors, the TCR is positive, which means that the resistance increases as the temperature increases, and decreases as the temperature decreases. Therefore, if the temperature of a material decreases, the resistance of the material will also decrease, assuming that the other factors affecting resistance (such as length and cross-sectional area) remain constant.

Decreasing the temperature of a material that obeys Ohm's law generally decreases the resistance because the charged particles in the material move slower, resulting in less resistance to current.

If a component obeys Ohm’s Law, resistance in most common materials generally increases with temperature. Therefore, decreasing the temperature of a material will normally decrease the resistance. This is because the charged particles in the material move more slowly at lower temperatures, leading to less resistance to current flow.

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Answer:

Violet light has a wavelength of ~400 nm, and a frequency of ~7.5*1014 Hz.

Explanation:

Answer:

weight, acceleration

Explanation:

weight = mass x gravity(meaning the direction of the mass)

acceleration = v-u/t

v-u is the change in velocity

The relationship involving joules as well as volume change represented as volume change in such an ice calorimeter investigation is 3670J/mL.

Calorimeters are instruments that quantify the amount of heat and volume produced over a specific time period. A tank that is partially filled with water and has a known thermal capability and density is passed through by the flow.

To gauge a body's temperature fluctuations, a calorimeter is utilized. Calculating enthalpy, stability, heat capacity, and other thermochemical quantities often involves the use of calorimetry. A instrument is a shadow tool used to gauge how much light is absorbed and transmitted as it passes through some kind of liquid sample.

specific volume of H2O(l) = 1.001mL/g

specific volume of H2O(s) = 1.092mL/g

heat of fusion = 334 J/g

= 334 J/g/ (1.092mL/g - 1.001mL/g)

= 3670J/mL

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Answer:

A field is a way of mapping forces surrounding any object that can act on another object at a distance without apparent physical connection. The field represents the object generating it. Gravitational fields map gravitational forces, electric fields map electrical forces, and magnetic fields map magnetic forces.

Explanation:

The voltage of this lightbulb is 4.16V. So, the correct option is A.

Voltage is also called electric pressure, electric tension or potential difference which is defined as the difference in electric potential between two points. This corresponds to the work required per unit charge to move a test charge between two points in a constant electric field.

The volt (symbol: V) is described as the derived unit for electric potential, voltage, and electromotive force. This is represented as:

V = IR

Where, V= voltage

I = current

R = resistance

For above given example,

I= 1.3 A

R= 3.2 ohms

V= 1.3* 3.2= 4.16V

Thus, the voltage of this lightbulb is 4.16V. So, the correct option is A.

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The basal metabolic rate for the girl of 14 years weighing 125 pounds and height of 5ft.6 inch is 1573 Kcal/day.

The basal metabolic rate of a person is the number of calories that is burned inside the body through basic life -sustaining metabolic functions. It can be calculated using the below equations for men and women.

BMR for men = 88.362 + (13.397 x weight in kg) + (4.799 x height in cm) – (5.677 x age in years)

BMR for women  = 447.593 + (9.247 x weight in kg) + (3.098 x height in cm) – (4.330 x age in years).

Given, the age = 14 years

weight = 125 pounds = 56.7 kg

1 feet =  30.48 cm

1 inch = 2.54 cm.

then 5ft.6inch = 167.64 cm.

Now BMR =  447.593 + (9.247 x 56.7) + (3.098 x 167.64 ) – (4.330 x 14)

=  1573 Kcal/day.

Therefore, the basal metabolic rate of the girl is 1573 Kcal/day.

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The information we will need to demonstrate that an object is in motion include;

An object is in motion when it changes its position with time, relative to a stationary object.

Mathematically, we can use the following equation to demonstrate the motion of an object.

v = Δx / Δt

where;

So the data we will need to demonstrate that an object is in motion include;

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In order to draw the free body diagram, let's draw the cart as a rigid object and each external applied force acting on this rigid object.

Also, the bigger the magnitude of the force, the bigger the arrow we draw to represent this force.

So we have:

Since the force to the left is greater than the force to the right and they are acting in opposite directions, the resulting force is the difference of the magnitudes and the resulting force is to the left. Therefore the blue team is the winner.

Answer:

the value of gravitational acceleration decreases as we go down and down while on the surface its value is greater...So on surface weight is greater as compared to mines or underground areas

Explanation:

Answer:

a) If both are charged

b) the first team has a load and the second half of it

c) The first team has a charge contrary to the rod, it is charged by induction and the second team has a charge equal to the rod, it is charged by contact

Explanation:

For this exercise let's analyze the charge on each electroscope separately

electroscope 1

Suppose the student with her finger on the device is grounded,

When bringing the rod closer to the electroscope a charge is indexed, on the side of the rod on the opposite side there is the same charge but with the opposite sign, as the student is grounded, this charge passes to the ground, this side remains neutral.

When removing the finger, loads can no longer pass, and when removing the rod the load from this side distributes throughout the equipment, therefore it has a load of the same magnitude as the rod

Electroscope 2

In this case, the equipment is touched, so the load redistributes in the two, when separating it remains with half the load of the cheek.

After analyzing each device separately we can answer the questions.

a) If both are charged

b) the first team has a load and the second half of it

c) The first team has a charge contrary to the rod, it is charged by induction and the second team has a charge equal to the rod, it is charged by contact

Yes, the large pickup truck has momentum.

Momentum is a fundamental concept in physics and is defined as the product of an object's mass and its velocity. The momentum of an object is a vector quantity, meaning it has both magnitude and direction.

In this case, the truck has a mass of 8,000 kg. Even though it is parked and not in motion, it still possesses momentum. The reason for this is that momentum depends on both mass and velocity. While the truck's velocity may be zero (since it is parked), its mass is significant.

Mathematically, the momentum (p) of an object is given by the equation p = m * v, where m represents mass and v represents velocity. In this scenario, the velocity of the truck is zero, resulting in a momentum of zero. However, the mass of the truck is still present, and according to the equation, the product of zero velocity and 8,000 kg mass yields a momentum of zero.

So, although the truck is not moving and its momentum is zero, it still possesses the potential for momentum due to its mass. If the truck were to start moving, its velocity would change from zero, and momentum would come into play according to the equation mentioned earlier.

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