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What if clock B reached a maximum height of 100 meters instead (still inside the chamber)? The gravitational acceleration is 9:8m=s2. Ignore e ffects of the spin of the earth.
The reflecting surfaces of two mirrors form a vertex with an angle of 111°. If a ray of light strikes mirror 1 with an angle of incidence of 50.1°, calculate the angle of reflection of the
A car is traveling around a circular race track at 180 kmh-1. If a single lap of the track is 2.4 km long, what is the angular velocity of the car (in rad s-1)?
At what speed must the second ball be thrown so that it reaches the same height as the one thrown vertically? The acceleration of gravity is 9.8 m/s2 .
Find the mass of water that vaporizes when 3.96 kg of mercury at 221 °C is added to 0.151 kg of water at 86.9 °C.
The famous Black Planet, Haunch, has a ra- dius of 106 m, a gravitational acceleration at the surface of 4 m/s2, and the tangential speed of any point on its equator is 103 m/s.
To determine if the ball approaches the cross-bar while still rising or while falling, what is its vertical velocity at the crossbar?
A 30·kg block is connected to an empty 1·kg bucket by a cord running over a frictionless pulley. The coefficient of static friction between the table and the block is 0.40 and the coef
What is the net force on a Merecedes convertible traveling along a straight road at a steady speed of 105 km/hr?
Once it is sliding, however, it takes only 1.50 N to keep the book moving with constant speed. What are the coefficients of static and kinetic friction between the book and the tabletop?
What is the most probable macrostate, and what is its probability? What is the least probable macrostate, and what is its probability?
When a current flows in an aluminum wire of diameter 4.97mm, the drift speed of the conduction electrons is 1.49x10^-4 m/s. What is the electron current in the wire? The conduction electron density
The coefficient of static friction between the cubes is 0.71. What is the smallest magnitude that P can have in order to keep the cube from sliding downward?
Find the horizontal distance of the diver from the end of the board when she is at her maximum height. If calculus is necessary don't hesitate. If you found that humorous, good.
Find the magnitude of the earth's centripetal acceleration as it travels around the sun. Assume a year of 365 days. Express your answer using two significant figures.
The initial speed of the box at the bottom of the incline is 1.50 m/s. How far does the box travel along the incline before coming to rest?
If it takes 2.80 ? 10-13 s for a nitrogen molecule to hit a wall and rebound with the same speed but moving in an opposite direction (assumed to be the negative direction), what is the average accel
The coefficient of kinetic friction between the block and the ramp is 0.76. Use energy conservation to find the distance the block slides before coming to rest.
A weight (with a mass of 86 kg) is suspended from a point near the right-hand end of a uniform boom with a mass of 78 kg. To support the uniform boom a cable runs from this same point to a wall (the
Calculate the change in kinetic energy ΔT, potential energy ΔU, and total energy ΔE of the charge as it travels from one plate to the other. Assume the initial speed of the electro
An electron is accelerated by a uniform electric field (1000V/m ) pointing vertically upward. Use Newton's laws to determine the value of electron's velocity after it moves 0.30cm from rest.
A car moves along a road in such a way that the distance x, travelled in a time t, is given by. Derive an expression for the velocity, v, as a function of time. Express your answers in terms of v, a,
A shot putter releases the shot some distance above the level ground with a velocity of 13 m/s and 51o above the horizontal. The shot hits the ground 2.08 s later. You can ignore air resistance. Wh
Answer in units of m. Find the average velocity of Car A during 5.0 s. Find the average velocity of Car B during 5.0 s. Answer in units of m/s.
The wire, and when it lies along the +y axis [i.e., the current is directed in the +y direction], the force is F = (2.4i - 4.9k) N. Find B.