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A 120 gcube of ice at 0°C is dropped into 1.0 kg of water that wasoriginally at 86°C. What is the final temperature of the water after the ice has melted?
°C
A thin film of oil (with index of refraction 1.36) is located on a smooth, wet pavement. How thick is the oil film
A 1.00 kg block is sitting on the top og a 10.0kg cart that is free to move on a horizontal surface. What is the maximum horizontal acceleration the cart can have
A 2 200-kg pile driver is used to drive a steel I-beam into the ground. calculate the average force the beam exerts on the pile driver while the pile driver is brought to rest
A hot air balloon is ascending straight up at a constant speed of 6.90 m/s. When the balloon is 13.0 m above the ground, a gun fires a pellet straight up from ground level with an initial speed of 31.0 m/s.
A 20.0-kg box rests on a horizontal surface. The coefficient of static and kinetic friction between the box and the surface are 0.30 and 0.10 respectively. obtain the friction force between the box and the surface
An Automobile engine slows down from 4500 rpm to 1200 rpm in 2.50 s. Calculate (a) its angular acceleration, assumed constant and (b) total number of revolutions the engine makes in this time.
a sewing machine needle moves up and down in simple harmonic motion with an amplitude of 1.27cm and a frequency of 2.55Hz. what is the maximum acceleration of the needle
A magnetized sewing needle has a magnetic moment of 11.04 mA · m2. How much work must be done on the system to move the needle from the minimum to the maximum potential energy orientation
The construction of a flat rectangular roof (5.15 m × 7.44 m) allows it to withstand a maximum net outward force of of 2.33 × 104 N. At what wind speed will this roof blow outward
You are assigned an experament to find g by dropping a 5 cm styrophoam sphere. Construct an uncertainty budget for this hypothetical situtation
A thin film of acetone (n = 1.25) coats a thick glass plate (n=1.50). White light is incident normal to the film. Calculate the thickness of the acetone film
A 1960 kg weather rocket is launched straight up. The rocket motor provides a constant acceleration for 22.03 s, then the motor stops. The rocket altitude 26.3 s after launch is 6641. You can ignore any effects of air resistance.
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