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Match the process by the fundamental interaction responsible for this process.
An apple is held off the ground by the surface of a table:
1. The weak interaction.
2. The normal interaction.
3. The strong interaction.
4. The air resistance/friction.
5. The gravitational interaction.
6. The electromagnetic interaction.
6. How many more minutes would it take light from the sun to reach Earth if the space among them were filled with water rather than a vacuum? The sun is 1.5 x 108 km from Earth.
In reality, the COP of the heat pump will only be 60 percent of the ideal value. What is the minimum power of the electric motor when the COP is 60 percent of the ideal value
Calculate the velocity of a transverse wave on a rope when the tension in the rope os 10 newtons, its length is 0.8 meters, and its mass is 0.05 kg
Find out the acceleration of the sled and child
A small ball is attached to one end of a spring that has an unstrained length of 0.152 m. By how much would the spring stretch if it were attached to the ceiling and the ball allowed to hang straight down, motionless
A particle of charge -60nC is placed at the center of anon-conducting spherical shell of inner radius 20cm and outerradius 25cm. The spherical shell is uniformly charged with acharge density of -1.33μC/m3.
Starting from rest at the top of a tall, steep ramp, a sphere rolls without slipping to the ground 6.9 m below. At the bottom, its speed is 9.0 m/s. Question The sphere is either solid or hollow: which is it?
A 60 kg person jumps from rest off a 5m high tower straight down into the water. obtain the average force that the water exerts on the diver
The terminal voltage of a certain battery is measured with the battery disconnected and is found to be 6.30 V. Find the voltage across the battery terminals
Jane is standing on the platform waiting for the train. The train approaching the platform from the north at 20 m/s blows its whistle when it is 100 m away from Jane. What frequency of sound does Jane hear
A vertical cylindrical tank contains 1.80 mol of an ideal gas under a pressure of 1.00 atm at 20.0oC. What is the mass of this piston
An apple weighs 1.01 . When you hang it from the end of a long spring of force constant 1.56 and negligible mass, it bounces up and down in SHM, What is the unstretched length of the spring
A 820 kg- sports car collides into the rear end of a 2700 kg- SUV stopped at a red light. calculates the speed of the sports car at impact
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