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Q1. A person is pulled to the right on a sled (total mass of 54.3 kg) across the surface of a frozen pond with a force of 86.6 Newton's so that they move with a constant velocity. What is the force of friction acting on sled?
Q2. A)Supposing that it remains at that value all the way to absolute zero, calculate the number of calories it would take to change a 0.50g ice cube at absolute zero (-273 degree C}) to 0.50 g of boiling water.
B)How does this number of calories compare with the number of calories required to vary the same gram of 100 degree C boiling water to 100 degree C steam?
A 32.0 kg hammer strikes a steel spike 2.70 cm in diameter while moving with speed of 24.0 m/s. The hammer rebounds with speed 11.0 m/s after 0.110 s. What is an average strain in the spike all through the impact.
What is magnitude of the momentum
The wind blows with a force of 425N north on a sail boat, while the water exerts a force of 325N west on the sailboat. Find out the magnitude and direction of the net external force on the sailboat.
An 82 kg parachutist descends through a vertical height of 350 m with constant speed. Find out the increase in entropy produced by the parachutist; assume the air temperature is 21 degrees C.
What is the distance between town and johns present location
What horizontal force is needed to hold bag in new position
Establish the average net force
What is the magnitude of the force on an electron that is in the region between the plates at a point accurately 2.52 mm from the positive plate
Compute the horizontal distance the ball
An object with a net charge of 44 µC is placed in a uniform electric ?eld of 554 N/C, directed vertically. The acceleration of gravity is 9.81 m/s^2. What is the mass of this object if it ?oats in this electric ?eld?
What is coefficient of friction between chair and floor
Find out the effective coefficient of kinetic friction
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