Challenging Physics Quiz Part: II
The second installment of a beginner/intermediate physics quiz! 10 Questions.
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A ball with a mass of 2Kg is dropped from a height of 5m. What is the ball's kinetic energy as it reaches the ground? (Take g = 10m/s^2 )
A thin-walled hollow cylinder and a solid cylinder start from rest and roll down an inclined plane. Both cylinders start at the same height. Which cylinder reaches the bottom of the first?
The hollow cylinder
The solid cylinder
Both reach bottom at same time
What's a cylinder??
You place two identical containers A and B, filled with water into a freezer. The temperatures of the water in the containers are 90°C and 30°C respectively. Which container will cool down faster?
Both cool down at the same rate
Container B (30°C) cools faster
Container A (90°C) cools faster
Impossible to tell
Two identical cars collide head on. Each car is traveling at 100 km/h. The impact force on each car is the same as hitting a solid wall at:
In the absence of air resistance, a ball of mass 'm' is tossed upward to reach a height of 20m. At the 10m position, half way up, the net force on the ball is:
When you drop a ball it accelerates downward at 9.8 m/s^2. If you instead throw it downward, then its acceleration immediately after leaving your hand, assuming no air resistance, is:
More than 9.8 m/s^2
Less than 9.8 m/s^2
Cannot say, unless the speed of throw is given.
Which travels faster?
The speed of sound in water
The speed of sound in air
The speed of sound in a vacuum
The speed of sound in Iron
What type of lens is in a magnifying lens?
An airplane speeds up when wind blows from behind and loses speed when the wind is head on. When the wind is at a right angle to the plane, what happens to its speed relative to the ground below?
None of the above
The Moon is most responsible for Earth’s tides. Which pulls more strongly on the Earth and its oceans?
Both pull equally
None of the above
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