Answers
Answer:
120 Newton
Explanation:
Given the following data;
Mass = 12 kg
Angle = 4°
We know that acceleration due to gravity is equal to 10 m/s
To find the minimum force to stop the block from sliding;
Force = mgCos(d)
Where;
m is the mass of an object.
g is the acceleration due to gravity.
d is the angle of inclination (theta).
Substituting into the formula we have;
F = 12*10*Cos(4°)
F = 120 * 0.9976
F = 119.71 ≈ 120 Newton
Related Questions
At the end of the _____ era matter and antimatter annihilate each other. Because of a small imbalance in the ratio, the universe is left with only ______.
Answers
At the end of the Electroweak era, matter and antimatter annihilate each other. Because of a small imbalance in the ratio, the universe is left with only matter.
What is baryogenesis process?The baryogenesis process refers to the hypothetical mechanism or mechanisms that generated the observed baryon asymmetry in the universe which refers to the fact that there is much more matter than antimatter
If the universe were perfectly symmetric between matter and antimatter the particles and antiparticles would have annihilated each other completely leaving behind only radiation.
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D Learning Task 1: In your notebook, define the following terms in your own words. fitness 8. coordination 2. health related fitness 9. agility 3. skill related fitness 10. speed 4. body composition Il port 5. cardiovascular endurance 12 balance 6. muscular strength 13 reaction time 7. Nexibility
Bibigyan ko ng verified answer
Answers
The wellbeing of a human body encompasses the fitness of the body:
Physically,Mentally, and Health-wiseWe take good care of the body to maintain proper health conditions and be free from disease, by doing so, we perform some fitness exercises and some of the following terms are defined below.
Fitness can be defined as a measure of the body's capacity to perform daily tasks successfully and efficiently.Coordination is the act of organizing or making diverse people work together, to achieve a particular objective in an organization.Health-related fitness refers to fitness exercises performed to maintain a perfect health condition and status quo of the body.Agility is described as the ability to change directions rapidly and easily at high speeds.
Skill-related fitness refers to a fitness exercise that helps to resharpen your posture and offer a professional outlook in your day-to-day roles.
Speed is defined as the change of an object's distance in relation to time.
Body composition is defined as the proportion of the fat-free mass of the body depending on several factors such as age, gender, physical activities, etc.
Cardiovascular endurance is the capacity of the heart, lungs, and blood to provide appropriate amounts of oxygen to the cells in order to fulfill the demands of continuous physical activity exertion.
Balance is the ability of the body to maintain an appropriate position in space.
Muscular strength is the maximum amount of force the muscle can produce in just a single muscular contraction.
Reaction time is the amount of time it takes a body to respond to stimuli.Nexibility is a physical process where objects have the tendency of being knitted together.
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If the height of an object is doubled, the potential energy will
OA. increase by 4 times
OB. decrease by 1/2
OC. stay the same
O D. double
SUB
Answers
The height of the object, given that the potential energy of the object doubled will be double (option D)
How do i determine the height of the object?First, we shall list out the given parameters. Details below:
Initial potential energy (PE₁) = PInitial volume height (h₁) = hNew potential energy (PE₂) = 2PNew volume height (h₂) = ?Potential energy is given as:
PE = mgh
Keeping mg constant, we have
PE₁ / h₁ = PE₂ / h₂
Inputting the given parameters, we have
P / h = 2P / h₂
Cross multiply
P × h₂ = h × 2P
Divide both sides by P
h₂ = (h × 2P) / P
h₂ = h × 2
h₂ = 2h
Thus, we can conclude that the new height of the object will also double (option D)
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Dale skis down a hill with a slope of 30°. Given that there is friction acting
between his skis and the snow as he moves, which of the following is the
correct free-body diagram for Dale?
Normal
force
Normal
force
Normal
force
Normal
force
Friction
Friction
Friction
Friction
Weight
Weight
Weight
Weight
А
B
С
D
A. A
O
B. B.
C. C
O
u
D. D
l
Answers
Answer:
The answer is A.
Explanation:
A ball falls down 30 meters from the top of a building. If the ball weighed 1.2 kg, what is the gravitational potential energy lost by the ball? Estimate g as 9.81.
Answers
Pe:353.16 J
Types of RM radiation that make up the electromagnetic spectrum are microwaves, infrared light, ultraviolet light, X-rays, and gamma rays.
True
False
Answers
Answer:
True
Explanation:
The electromagnetic spectrum can be regarded as term that give description of range of light that are in existence, and this range from radio waves up to gamma rays. It can be explained as
range of frequencies that electromagnetic radiation takes with thier respective wavelengths as well as photon energies
The Types of electromagnetic radiation that make up the electromagnetic spectrum are
✓ microwaves
✓ infrared light
✓ ultraviolet light
✓X-rays,
✓gamma rays.
the minimum pressure of a block of Mass 60 kg measuring 6 cm by 5cm
by 4cm
Answers
The minimum pressure exerted by the 60 kg block with dimensions of 6 cm x 5 cm x 4 cm is 196,200 Pa (Pascals).
The minimum pressure exerted by a block with a mass of 60 kg and dimensions of 6 cm x 5 cm x 4 cm.
To calculate the pressure, we need to consider the block's weight and the contact area between the block and the surface it is placed on.
First, let's find the weight of the block using the formula:
Weight = Mass x Gravity
Weight = 60 kg x 9.81 m/s² (approximate value of gravity on Earth)
Weight = 588.6 N (Newtons)
Next, we need to determine the contact area between the block and the surface it is placed on. Since we want to minimize the pressure, we'll use the largest face of the block as the contact area. The largest face has dimensions of 6 cm x 5 cm (0.06 m x 0.05 m, as we need to convert to meters).
Therefore, the contact area is:
Area = 0.06 m x 0.05 m = 0.003 m²
Now, we can calculate the pressure exerted by the block using the formula:
Pressure = Force / Area
Pressure = Weight / Contact Area
Pressure = 588.6 N / 0.003 m²
Pressure = 196,200 Pa (Pascals)
Thus, the minimum pressure exerted by the 60 kg block with dimensions of 6 cm x 5 cm x 4 cm is 196,200 Pa (Pascals) when the largest face is in contact with the surface.
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what is the velocities of car b after the collision
Answers
Given,
The mass of the bumper car A is
\(M_A=281\text{ kg}\)The mass of the bumper car B is
\(M_B=209\text{ kg}\)The velocity of the bumper car A is
\(V_A=2.82\text{ m/s}\)The velocity of the bumper car B is
\(V_B=1.72\text{ m/s}\)To find: The velocity of car B after the collision.
Let v₁ and v₂ denote the velocity of car A and car B, respectively, after the collision. It sounds like both cars are initially moving in the same direction (since both have positive initial velocity).
Since momentum is conserved,
\(\begin{gathered} (281\text{ kg\rparen}\times(2.82\text{ m/s\rparen+\lparen209 kg\rparen}\times(1.72\text{ m/s\rparen=281 kg}\times v_1+209\text{ kg}\times v_2 \\ 1151.9\text{ kg.m/s= 281v}_1+209v_2.............(1) \end{gathered}\)The kinetic energy is also conserved.
\(\begin{gathered} \frac{1}{2}\times281\times(2.82)^2+\frac{1}{2}\times209\times(1.72)^2=\frac{1}{2}\times281\times v_1^2+\frac{1}{2}\times209\times v_2^2 \\ 2852.93\text{ }\frac{m^2}{s^2}=281v_1^2+209v_2^2..........(2) \end{gathered}\)Solve the first equation for v₁ :
\(v_1=\frac{1151.9-209v_2}{281}\)Substitute v₁ into the second equation and solve for v₂.
\(\begin{gathered} 2852.93\text{ }\frac{m^2}{s^2}=281[\frac{1,151.9-209v_{2}}{281}]^2+209v_2^2 \\ v_2^2=2.96\text{ }\frac{m^2}{s^2},\text{ 8.89 }\frac{m^2}{s^2} \\ v_2=1.72\text{ m/s, 2.98 m/s} \end{gathered}\)Where we ignore the first solution since it corresponds to the initial condition.
Thus, the velocity of car B after the collision is
\(v_2=2.98\text{ m/s}\)what is the acceleration of the skateboarder? help?(asap)
Answers
Answer:
i think its B
(could possibly be C but i think its B)
Explanation:
I'm not sure about how can solve this problem. Please help me!!
Answers
The magnitude of the power dissipated in resistor R4 is approximately 10,028 watts.
How to find magnitude?To find the power dissipated in resistor R4, use the formula:
P = I² × R
where P = power, I = current flowing through the resistor, and R = resistance of the resistor.
The total resistance, Rt, can be calculated using the formula:
1/Rt = 1/R1 + 1/R2 + 1/R3
Substituting the given values:
1/Rt = 1/3 + 1/0.8 + 1/2
Simplifying the equation:
1/Rt ≈ 1.6667
Rt ≈ 0.6 Ω
Next, calculate the total voltage, Vt, by summing the individual voltage sources:
Vt = ε1 + ε2 + ε3
Substituting the given values:
Vt = 9 + 6 + 4
Vt = 19 V
Now calculate the current flowing through resistor R4 using Ohm's Law:
I = Vt / Rt
Substituting the calculated values:
I = 19 / 0.6
I ≈ 31.6667 A
Finally, calculate the power dissipated in resistor R4:
P = I² × R4
Substituting the calculated values:
P = (31.6667)² × 10
P ≈ 10,028 W
Therefore, the magnitude of the power dissipated in resistor R4 is approximately 10,028 watts.
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Skills Practice
4. Starting from one shore, you swim east across a narrow river to the other shore.
The river is 19.0 m wide. As you swim, the river current moves you north up the
river a distance of 12.0 m. Draw a diagram representing this situation What is you
resultant displacement? Express your answer in components, and then determin
the magnitude.
Answers
Answer:you think i know jesus im in y8 i barley know any g anyway someone asked me something that only albert eientsien knew .
Explanation:
I'm also cluless but i feel good for helpig other people out
The question involves calculating the resultant displacement of swimming across a river while also being carried north by the current. In this scenario, the eastward displacement is 19.0 m, and the northward displacement due to the current is 12.0 m. Using these vectors, the total displacement can be calculated as approximately 22.36 m.
Explanation:The subject of this question is Physics, specifically the concept of calculating displacement, which is a vector quantity. To solve this, we start by setting up a vector diagram. One vector represents your direction of swimming (east), which is 19.0 m long. The other vector represents the direction of the river current (north), which is 12.0 m long. The resultant displacement is the hypotenuse of the right-angled triangle they form. To calculate this magnitude, express your displacement in components: The eastward displacement is (19.0 m, 0) and the northward displacement is (0, 12.0 m). Finally, we can determine the resultant displacement using the Pythagorean theorem (sqrt[(19.0m)^2 + (12.0m)^2]), which gives a magnitude of approximately 22.36 m.
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URGENT HELP IT IS DUE BY TONIGHT PLEASE HELP
Answers
Answer:
45.8
Explanation:
becuse 9.8+36=45.8 simple
A straight wire, labeled as Wire A, lies horizontally on a tabletop and is oriented to run north-south. A conventional current of 1.0 amperes runs in the wire directed towards the north. A second wire, labeled as Wire B, is also laid on the tabletop oriented north- south. Which of the following statements is true?
a. If Wire B carries no current in it and lies to the left (west) of wire A, then it will experience an attractive force to the right towards wire A).
b. If Wire B carries a northward conventional current and lies to the left (west) of wire A, then it will experience an attractive force to the right (towards Wire A).
c. If Wire B carries a northward conventional current and lies to the right (east) of wire A, then it will experience a repulsive force to the right (away from Wire A).
d. If Wire B carries a southward conventional current and lies to the left (west) of wire A, then it will experience a repulsive force to the left (away from Wire A).
Answers
Answer:
b. If Wire B carries a northward conventional current and lies to the left (west) of wire A, then it will experience an attractive force to the right (towards Wire A).
d. If Wire B carries a southward conventional current and lies to the left (west) of wire A, then it will experience a repulsive force to the left (away from Wire A).
Explanation:
Two parallel conductors experience attractive force when the current flowing in the conductors are in the same direction.
Also two parallel conductors experience repulsive force when the current flowing in the conductors are in opposite direction.
Therefore, b and d are the correct options.
b. If Wire B carries a northward conventional current and lies to the left (west) of wire A, then it will experience an attractive force to the right (towards Wire A).
d. If Wire B carries a southward conventional current and lies to the left (west) of wire A, then it will experience a repulsive force to the left (away from Wire A).
A rectangular block weighting 320N has dimensions 4metre by 10metre what is the greater pressure and the least pressure it can be exerted on the ground
Answers
The pressure exerted by a rectangular block on the ground is 8 Pascal (Pa) when its weight is 320 N and its dimensions are 4 meters by 10 meters. The greatest pressure occurs when the block is vertically placed at 20 Pa, while the least pressure occurs when it is horizontally placed at 8 Pa.
To calculate the pressure exerted by the rectangular block on the ground, we need to consider the formula for pressure:
Pressure = Force / Area
Given that the weight of the block is 320 N and the dimensions of the block are 4 meters by 10 meters, we can calculate the area of the block in contact with the ground. In this case, it is the length multiplied by the width of the block.
Area = length * width
Area = 4 meters * 10 meters
Area = 40 square meters
Now, we can calculate the pressure exerted by the block on the ground:
Pressure = 320 N / 40 square meters
Pressure = 8 N/m^2 (Pascal)
Therefore, the pressure exerted by the rectangular block on the ground is 8 Pascal (Pa).
To determine the greatest pressure and the least pressure that can be exerted on the ground, we need to consider the orientation of the block.
The greatest pressure occurs when the block is placed vertically on one of its smallest faces. In this case, the entire weight of the block (320 N) is concentrated on a smaller area.
The area in contact with the ground is given by the length multiplied by the width of the smallest face.
Area = 4 meters * 4 meters = 16 square meters
Greatest Pressure = 320 N / 16 square meters = 20 \(N/m^2\)(Pascal)
The least pressure occurs when the block is placed horizontally on one of its largest faces. In this case, the weight of the block is distributed over a larger area.
The area in contact with the ground is given by the length multiplied by the width of the largest face.
Area = 4 meters * 10 meters = 40 square meters
Least Pressure = 320 N / 40 square meters = 8 \(N/m^2\)(Pascal)
Therefore, the greatest pressure that can be exerted on the ground is 20 Pascal (Pa), and the least pressure is 8 Pascal (Pa).
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what's the difference between coplanar forces and resultant forces?
Answers
Answer:
coplanar When all forces are acting in the same
resultunt the single force and associated torque obtained by combining a system of forces and torques acting on a rigid body via vector addition
Density equals 81g per cubic centimeter. What is the mass? What is the volume?
Answers
Answer:
mass = 81g
volume = 1cm^3
Explanation:
How does uplift change the surface of Earth?
Answer options with 4 options
A.
Snow melts on the surface of Earth, causing rivers to form.
B.
Magma rises from the surface of Earth, causing lava beds to form.
C.
Wind blows across the surface of Earth, causing sand dunes to form.
D.
Pressure builds under the surface of Earth, causing mountains to form.
Answers
Pressure builds under the surface of Earth, causing mountains to form.The correct answer is option D.
Uplift refers to the geological process that elevates the Earth's surface, resulting in the formation of mountains. This process is primarily driven by tectonic forces, including the movement and collision of Earth's lithospheric plates.
When two plates converge, immense pressure builds up beneath the surface, causing the crust to buckle and fold. This deformation leads to the formation of mountains, as rocks are pushed upward and displaced vertically.
As the uplift process continues over millions of years, mountains gradually take shape. Erosion and weathering play significant roles in shaping their features, but it is the initial uplift that initiates the formation of mountains.
As the Earth's surface is elevated, a wide range of landforms can emerge, including rugged peaks, deep valleys, and steep slopes.
Uplift has a profound impact on the Earth's surface and ecosystems. Mountains alter local climates, influencing precipitation patterns and creating variations in temperature and wind patterns.
Therefore, uplift plays a crucial role in shaping the Earth's surface and influencing various geological, biological, and climatic processes.
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List the following in order of increasing mass: an atomic nucleus, a cell, an electron, a DNA molecule.
Answers
The order of increasing mass is:
An electron < An atomic nucleus < a DNA molecule < a cell.
An electron is a fundamental particle with a negative charge and has a very small mass of order \(10^{-31}\ kg\). Which makes it the lightest in the group.
An atomic nucleus consists of protons and neutrons which both individually have larger mass than an electron. The order of magnitude of the nucleus's mass is \(10^{-27}\ kg\) or higher.
A DNA molecule is a polymer chain of nucleotides and it carries genetic information. It contains many atoms, therefore it makes sense that it should have more mass than an atomic nucleus. Each human cell has about DNA of mass of order \(10^{15}\ kg\).
Lastly, A cell has the most mass in the given list since it encompasses everything else in the list.
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If a catalyst was added to the reaction below, which values would be affected? Check all that apply
Answers
If a Catatlyst was added the values affected would be 2, 3, 4
What is a cata;lyst?A catalyst is a substance that speeds up the rate of a chemical reaction without undergoing any permanent change itself. It facilitates the reaction by providing an alternative pathway with lower activation energy, which allows the reaction to occur more readily.
Catalysts work by interacting with the reactant molecules and weakening the existing bonds or creating new ones, making it easier for the reaction to proceed.
Catalysts are typically specific to certain reactions and can be used in small amounts relative to the reactants. They play a crucial role in many industrial processes and are essential for efficient chemical transformations.
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A ball is dropped off a building and falls past a window that is 2.2m long. If it takes .28s for the ball to cross the window what is the distance from the top of the building to the top of the window?
Answers
of the building to the top of the window.
a 50 kg boy runs at 3 m/s. how much momentum does he have
Answers
Answer:
150 kg-m/s
Explanation:
momentum = m * v
50 * 3 = 150
A 4-stroke heat engine in an automobile is
used to
A convert mechanical energy into heat
energy.
B convert heat energy into mechanical
energy.
с convert steam into solar energy.
D convert chemical energy into electrical
energy.
Answers
Answer:
b
Explanation:
convert heat energy into mechanical
What are used to measure temperature.
Answers
Answer:
A thermometer is an instrument that measures temperature.
Explanation:
A boat, whose speed in still water is 1.75 m/s, must aim upstream at an angle of 26.3° (with respect to a line perpendicular to the shore) in order to travel directly across the stream.
(a) Determine the speed of the current.
(b) Determine the resultant speed of the boat with respect to the shore.
(a) should be 0.7775 m/s
(b) should be 1.57 m/s (i’m looking for the explanation)
Answers
A boat must aim upstream at an angle of 26.3° (with respect to a line perpendicular to the coast) with respect to a line should be 1.57 m/s for a boat moving at 1.75 m/s in still water.
How come a line is perpendicular?Perpendicular lines are two different lines that cross at a right angle of 90 degrees. Here, AB and XY connect at a 90-degree angle, making AB perpendicular to XY. The two lines do not intersect and run parallel to one another. They can't possible be compared side by side.
What is a perpendicular's form?A form is considered perpendicular if at least two of its sides are 90 degrees from one another. Shapes with perpendicular sides include the following: Square. Rectangle.
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Which branch of science studies how sound waves move through the air?
A. Life science
B. Physical science
C. Space science
D. Earth science
Answers
Answer:
B is the correct answer
Explanation:
just bc I said so:)
first correct answer gets brainliest
Answers
Answer:
electrical energy transforming into sound energy in speaker
Answer:
the first one. Electrical energy transforming into sound energy in a speaker
26. Which member of the carbon family is a non-metal?
Please help
Answers
Explanation:
Check out the Periodic Table attached here. The Carbon family is the vertical group starting with Carbon, Group 14. Nonmetals are in green, which element there is a nonmetal?
What is the resultant of these forces acting on the same object? 6.0 N, West; 1.2 N East; and 7.2 N, North
Answers
We have the next diagram
Then we need to find the resultant
\(\sum ^{}_{}F_x=6\cos (135)+7.2\cos (45)=_{}0.84\)\(undefined\)
In the following circuit, find the potential difference (magnitude) between points A and B.
Answers
The potential difference between points A and B in the circuit is 12 V.
How to determine potential difference?To find the potential difference between points A and B in the given circuit, determine the total voltage across the circuit.
From the information provided, there are four resistors labeled as 12 Ω each. Assuming these resistors are connected in series, the total resistance in the circuit is 12 Ω + 12 Ω + 12 Ω + 12 Ω = 48 Ω.
Next, determine the current flowing through the circuit. The voltage is given as 24 V.
Using Ohm's Law (V = IR), calculate the current:
I = V / R
I = 24 V / 48 Ω
I = 0.5 A
Since the resistors are connected in series, the current remains the same throughout the circuit.
Finally, to find the potential difference between points A and B, multiply the current by the resistance between those points:
V_AB = I × R_AB
V_AB = 0.5 A * 24 Ω
V_AB = 12 V
Therefore, the potential difference between points A and B in the circuit is 12 V.
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A cheetah can run at speeds approaching 120 km/hr. What distance would the cheetah cover in 1.3 minutes
Answers
In order to determine the distance traveled by the cheetah, use the following formula:
\(d=v\cdot t\)where,
v: speed of the cheetah = 120 km/h
t: time = 1.3 min
d: distance = ?
Convert 1.3 min to hours (to be able to operate into the formula for d), as follow:
\(1.3\min \cdot\frac{1h}{60\min }=0.0216h\)Next, replace the given value of v and the previous value of time into the formula for d:
\(d=(120\frac{km}{h})(0.0216h)=2.6\operatorname{km}\)Hence, the cheetah traveled 2.6 km