The mass of the box is 450kg which is drawn at a constant speed along a horizontal surface. The angle between the drawbar and the horizontal surface is 30 degrees. How big is the shear modulus...

The mass of the box is 450kg which is drawn at a constant speed along a horizontal surface. The angle between the drawbar and the horizontal surface is 30 degrees. How big is the shear modulus...

The lift moves down at a speed of 3.0 m/s and brakes evenly so that the elevator stops 2 seconds after the braking. The mass of the lift is 850kg. How much force the elevator's rope affect the elevator...

The ball is thrown from a height of 2m at an initial speed of 15m/s and the starting direction forms a 35 degree angle. a) what is the ball flight time when it hits the ground? b)...

a freezers internal temp. is -25C. A 150kg block of ice is taken from the freezer and placed in the hot tub. The tub has a 23kw heater that is run for 1 hr. What is the final temp. of the water in...

If the sled moved a distance of 70.3 m how much work did Melvin do?

A.What is the final velocity of the block after the bullet embeds itself? B.Considering the initial and final kinetic energies, how much energy is lost in the process? C.The block with the bullet...

You push the merry-go-round so that it constantly accelerates from rest to a final speed of 1.7 rotations per second at the end of a 25 second interval. (please complete all questions using radians)A...

Suppose a piece of dust finds itself on a CD. If the spin rate of the CD is 455 rpm, and the piece of dust is 4.4 cm from the center, what is the total distance traveled by the dust in 4 minutes?...

Consider the 62.0 kg mountain climber in the figure. https://imgur.com/a/TJIqs A.) Find the tension in the rope (in N) and the force that the mountain climber must exert with her feet (in N) on the...

The center of mass of a person may be determined by an arrangement such as the one shown in the figure below. A light plank rests on two scales separated by a distance of d = 1.80 m and...

Boltzmann’s constant is 1.38066×10−23 J/K, and the universal gas constant is 8.31451 J/K · mol. If 1.6 mol of a gas is confined to a 6 L vessel at a pressure of 6.7 atm, what is the average kinetic...

A phonograph record accelerates from rest to 25.0 rpm in 2.50 s. (a) What is its angular acceleration in rad/s^2? (b) How many revolutions does it go through in the process?

A contestant in a winter games event pushes a 48.0 kg block of ice across a frozen lake with a rope over his shoulder at a 25 degree angle. The coefficient of static friction is 0.1...

We know silver is a best conductor,but many scientist take gold foil as experiment.

I am stuck in my physics class. Can someone please help me out. I would really appreciate it. Thank you:)

A ball is dropped from the roof of a tall building. When you start your stopwatch, the ball has already reached half the height of the building. You stop your stopwatch exactly before the ball...

Mary applies a force of 76 N to push a box with an acceleration of 0.60 m/s^2. When she increases the pushing force to 85 N, the box's acceleration changes to 0.87 m/s^2. There is a constant...

In an exciting game, a baseball player manages to safely slide into second base. The mass of the baseball player is 88.9 kg and the coefficient of kinetic friction between the ground and the player...

You are helping your friend move a new refrigerator into his kitchen. You apply a horizontal force of 265 N in the positive x direction to try and move the 59 kg refrigerator. The coefficient of static...

For a huge luxury liner to move with constant velocity, its engines need to supply a forward thrust of 7.50 X 10^5 N. What is the magnitude of the resisting force exerted by the water (in N)...

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