How much work is done by the force of gravity when a 45N object falls to the ground from a height of 4.6m?

Q: What is the relationship between the speed a car is traveling and its braking distance?

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Q: A thrust of 375 N is exerted on a certain area. If the pressure on the area is 4250 Pa, calculate th...

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Q: What is the total current of the circuit? * 11.265 What is the current in the 20-ahm resistor? * 4.0...

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Q: Suppose a speck of dust in an electrostatic precipitator has 9.1000x1011 protons in it and has a net...

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Q: Question: Keep the plate area constant, change separation. How do you think the capacitance will cha...

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Q: 8. Which of the following statements is not true for the two postulates of special relativity? The l...

A: 7)The two postulates are a.Speed of light is constant for all references. b.Laws of physics holds in...

Q: Solve this question.Show your solution. Always express the final answer in SI. At what separation i...

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Q: A 1500kg automobile accelerated from 10km/hr to 140km/hr. How much work in KJ does this require?

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Q: What is the magnitude of the resultant of the following vectors? Vector A = 90 m, 35° N of W Vector ...

A: Given value--- Vector A = 90 m, 35° N of W Vector B = 45 m, 40° S of E We have to find--- What is...

Q: A 0.50-mm-wide slit is illuminated by light of wavelength 500 nm. What is the width of the central m...

A: Given: The width of the slit is 0.5 mm. The wavelength of the light is 500 nm. The distance of the s...

Q: A metal is heated up to a temperature of 500 degrees. It is then exposed to a temperature of 38 degr...

A: According to Newton's law of cooling:- T=T0+(Ti-T0)e-kt where, T=Temp. at any time 't'.T0=Surroundin...

Q: A pitcher bestows a power of P = 206 W to a baseball of mass m = 0.095 kg for a period of t = 0.28 s...

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Q: 13. (Ch 5) You are holding a book against a wall by pushing up at an angle with your hand. Your push...

A: 13. Given: mass of book = m angle = θ coeff. of static friction =μ

Q: A nonuniform electric field is directed along the x-axis at all points in space. This magnitude of t...

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Q: *1.3 PQ1 For each of the following units, list the primary dimensions: kWh noise slug cfm cSt

A: According to question we need to find unit and dimension?

Q: A jet plane has a takeoff speed of vto = 72 m/s and can move along the runway at an average accelera...

A: Given data : Distance (S)=1.4 Km Acceleration (a)=1.7 m/s2 Initial speed (U)=0  Take off speed=72 m/...

Q: A baseball player throws a ball horizontally. Which statement best describes the ball's motion after...

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Q: A car accelerates from rest at 7.55 m/s2 for 4.25 s. Determine the final velocity of the car.

A: Given data : Initial velocity=U Acceleration=a Time=t   Required :  

Q: Problem Find the electric potential and the electric field at a point P located on the axis of a uni...

A: Image_1

Q: Approximately how long should it take 9.8 kgkg of ice at O•C•C to melt when it is placed in a carefu...

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Q: 3. A fine (thin) ring with a radius 50 mm is being pulled from the surface of water. If the ring has...

A: In this question we have to find the force P which is required to pull the ring free from the surfac...

Q: y F1 13 12 5 02° FR F2 F1 = 400 N F2 = 675 N FR =933 N 02 = 45 °

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Q: 2. A vector has an x-component of -25.0 units and a y-component of 40.0 units. Find the magnitude an...

A: There are two different questions. According to guideline l solve only first one. 

Q: A motorist drives north for 34.0 minutes at 92.5 km/h and then stops for 15.0 minutes. He then conti...

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Q: A certain source of wave produces 2880 complete waves in 1hour .the waves have a wavelength of 6m ca...

A: Given that:- n=2880t=1 hr=3600 secλ=6 mc=?f=?

Q: ACROS 1 Tells which way the object is moving. 3 A place where an object is located. 4 The change in ...

A: ACROSS (1) The path through which an object moves is direction. Every object moves following a parti...

Q: A high fountain of water is located at the center of a circular pool as shown in the figure below. N...

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Q: 10 kg of water at 80 °C is mixed with 5 kg of water at 20 °C. The final temperature of the mixture ...

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Q: A body experiences acceleration "a" given by the expression a = At - Bt?, where A and B are constant...

A: Given that:- Acceleration of the body=a=At-Bt^2

Q: Given data Force=4 N Displacement=1 m Work done

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Q: 1. Determine the X and Y components of each of the forces shown. F- 390 12 30 P-300 T-400 Ib

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Q: Use Gauss's law to infer electric field due to uniformly distributed charges on long wires, spheres,...

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Q: A ball is dropped from a building, after 2 seconds another ball was thrown downward. After 60 second...

A: Given that:- Ball1 is dropped from a building at t=0sec, After 2 sec ball 2 is thrown vertically dow...

Q: What happens to the force between two charged metal spheres in a vacuum if the charge on each is dou...

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Q: Three forces act on a moving object. One force has a magnitude of 80.7 N and is directed due north. ...

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Q: linear spring with a spring constant of k, which compresses from position x; to position Xf. m Part ...

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Q: A 50 cm thick block of copper is placed against a 30 cm block of iron. Let the dimensions of the fac...

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Q: How many significant figures are there in each of the following? (a) 83.4 ± 0.9 (b) 3.4130 x 109 (c)...

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Q: Carry out the following arithmetic operations. (Enter your answers to the correct number of signific...

A: We have to find the sum, product (a)  578 is answer (b) 2.4 (c) 56.206  

Q: Given data Force=2 N Displacement=1 m Work done

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Q: An RC circuit with one resistor and one capacitor has a time constant of 1.5 seconds when the resist...

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Q: A plane can travel with a speed of 80 mi/hr with respect to the air. Determine the resultant velocit...

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Q: On a route between two towns a car moves 50km due east then 122 km S16°E then 40km due west. Determi...

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Q: Assuming that the field of view is flat, what is the resultant vector (yellow line) of an observer p...

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Q: Newton's law of universal gravitation is represented by Mm F = G- where F is the gravitational force...

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Q: I'm your own words why is it important to know the parts of the hand grenade?

A: A hand grenade is an anti-personnel weapon designed and used to clear out enemy fortifications, buil...

Q: 4) Just as in problem 3 above, a neutral molecule has a dipole moment of 5 Debyes (1.6E-29 Cm) point...

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Q: 1.5 The plot shows the velocity v versus time t for an object that is moving. 0.5 3 5 t (s) Part (a)...

A: The answers are below 

Q: For this position, what torque is created by the weight about her knee joint axis? b. If the moment...

A: a) force = 100 N.  Distance of force line from axis = 30 cm         =   0.3 m So, moment = 100 ×0.3=...

Q: To uncharge a positvely charge particle by remove some protons on it. remove some electrons on it. p...

A: charge on a given particle = positive Aim : To uncharge the particle