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A small block with mass 0.0450kg slides in a vertical circle of radius 0.600m on the inside of a circular track. During one of the revolutions of the block, when the block is at the bottom of its path, point A, the magnitude of the normal force exerted on the block by the track has magnitude 4.00N . In this same revolution, when the block reaches the top of its path, point B, the magnitude of the normal force exerted on the block has magnitude 0.665N .
How much work was done on the block by friction during the motion of the block from point A to point B?
A bird stands on a dc electric transmission line carrying 3300A (Figure 1) . The line has 2.7×10?5? resistance per meter, and the bird's feet are 3.5cm apart
A wave has the following properties: amplitude = 0.208 m, period = 0.687 s, wave speed = 13.7 m/s. The wave is traveling in the -x direction
Calculate the scale height for water vapor in the Earth's atmosphere, Use this information to state whether telescopes atop mount kea would be better for infrared astronomy than one's at sea level
An object with a net charge of 22 µC is placed in a uniform electric field of 600 N/C, directed vertically. What is the mass of object if it floats in this electric field.
Illustrate what is the speed of the three coupled cars after the collision? How much kinetic energy is lost in the collision?
A satellite orbits at a distance from the Earth's center of about 4.80 Earth radii and takes 14.8 hours to go around once, What is its orbital velocity
How much friction must be exerted between the skates and ice.
A 54 {rm kg} ice skater spins about a vertical axis through her body with her arms horizontally outstretched, making 2.5 turns each second. The distance from one hand to other is 1.5 {rm m}. Biometric measurements indicate that each hand typically..
The sun's mass is 1.99 x 10^30 kg, the earth's mass is 5.98 x 10^24 kg, and the moon's mass is 7.36 x 10^22 kg. The average distance between the moon and the earth is 3.82 x 10^8 m, and the average distance between the earth and the sun is 1.50 x ..
Electrons which were initially at rest were subjected to a continuous force of 2×10-12 newton along the entire length of two miles (one mile is 1.6 kilometers) and reached speeds very near the speed of light.
How much heat must be removed from 0.40 kg of water at 0 degrees C to make ice cubes at 0 degrees C?
The lander is 8.2 meters above the surface and has the downward speed of 0.89 m/s while the engine is cut off. What is the speed of the lander just before it touches the surface.
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