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Q1. A rectangular container measuring 25 × 39 × 63 is filled with water. What is the mass of this volume of water?An iron cube floats in a bowl of liquid mercury at 0 C.
a) if the temperature is raised to 28 C; will cube float higher or lower in the mercury?
b) By what percent would the fraction of volume submerged change?
Q2. Solve problems correctly.
1. If 2.13 X 10^6 of work must be completed on a roller-coaster car to move it 3.00 X 10^2 m, how large is the net force acting on car?
2. A force of 715 N is applied to a roller-coaster car to push it horizontally. If 2.72 X 10^4 J of work is done on car, how far has it been pushed?
3. In 0.181s, during a distance of 8.05m, a test pilot's speed decreases from 88.9m/s to 0 m/s. If the pilot's mass is 70kg, how much work is done against his body?
A 2.0 mL syringe has an inner diameter of 4.0 mm, the needle inner diameter of 0.21 mm, and a plunger pad diameter (where you place your finger) of 1.20 cm. A nurse uses the syringe to inject medicine into a patient whose blood pressure is 140/100. S..
A child and sled with a combined mass of 49.20 kg slide down a frictionless hill that is 7.38 m high. If the sled starts from rest, what is its speed at the bottom of hill.
A hotel elevator ascends 170 m with a maximum speed of 5.9 m/s. Its acceleration and deceleration both have the magnitude of 1.5 m/s2.
What is average kinetic energy of each helium atom
What is the Bens kinetic energy
The press box at a baseball park is 30 ft above the ground. A reporter in the press box looks at an angle of 18 degrees below the horizontal to see second base. What is the horizontal distance from the press box to second base.
A shell, fired from a cannon, has a muzzle speed (the speed as it leaves the barrel) of 800 ft/s. The barrel makes an angle of 45o with the horizontal and, for ease; the barrel opening is assumed to be at ground level.
What is the mass of sculpture (in kg) assume that the local acceleration due to gravity is 9.80 m/s2.
An insulated Thermos contains 210 cm3 of hot coffee at 88 °C. You put a 19.00 g ice cube at its melting point to cool the coffee. By how many degrees has the coffee cooled once the ice has melted and equilibrium is reached? Treat the coffee as though..
Velocity and time for the moving particle.
F ind the speed of the golf ball just after impact
Now a peg is placed 4/5 of the way down pendulum's path so that when the mass falls to its vertical position it hits and wraps around the peg. As it wraps around the peg and attains its maximum height it ends a distance of 3/5 L below its starting po..
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