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Q1. an aluminum pot (c_Al =0.22 cal/g.K is heated to 320C. then an 80g ice cube at 0C isplaces in the pot, it melts and is heated to the boiling point, and 20 grams turns to steam. calculate the mass of the pot.
Q2. A metal cube with 40cm side is heated to 400C. it is placed in a room at 25C. Assume it behaves like a black body. Calculate the net power of cube due to radiation.
If the charge is 23 mu/C, the velocity is 1500 m/s, find the force (magnitude and direction) on the charge.
From what height did the student fall? Assume that the only force acting on him throughout the collision is that as a result of the ground.
The runner turns around and runs in the -x direction at the same speed. Now what is the kinetic energy of the runner
An Australian emu is running due east in a straight line at a speed of 12.5 m/s and slows down to a speed of 11.4 m/s in 7.3 s. (a) What is the direction of the bird's acceleration? north south east west.
A hare and a tortoise compete in a race over a straight course 0.90 km long. The tortoise crawls at a speed of 0.300 m/s toward the finish line, For how long in time was the hare stationary
there are two telescopes observing at night. the first telescope is 0.3m and has a focal ratio of f8. the second
In a mall, a shopper rides up an escalator between floors. At the top of the escalator, the shopper turns right and walks 11.42 m to a store. At what angle is the escalator inclined above the horizontal
a ball of mass 2.0 kg is traveling towards you at 15 ms. you are at rest and have a mass of 70 kg.a. assuming you catch
Assume you weight is 128 lb. Compute your weight in N. Compute your mass in kg. Compute your mass in slugs
Suppose the force acting on a tennis ball (mass 0.040 kg) points in the +x direction and is given by the graph of Fig. 7-30 as a function of time. a) Use a graphical method to estimate the total impulse given the ball.
A wooden block with equal sides of 4 cm is floating in water. If the density of the block is half the density of water, how far is it from the water to the top of the block?
A bead of mass m slides without friction down a track and around a loop-the-loop of radius R. The initial height of the track is h = 3.5R. What is the speed of the mass after going around the loop
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