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A 2.3 kg box, starting from rest, is pushed up a ramp by a 10 N force parallel to the ramp. The ramp is 2.0 m long and tilted at 17 degrees. The speed of the box at the top of the ramp is 0.80m/s
How much work does the force do on the system?
____J
What is the change in the kinetic energy of the system?
What is the change in the gravitational potential energy of the system?
What is the change in the thermal energy of the system?
Two particles are fixed to an x axis: particle 1 of charge q1 = 1.86 x 10-8 C at x = 27cm and particle 2 of charge q2 = -3.63q1 at x = 77.7cm. At what coordinate on the x axis is the electric field produced by particles equal to zero.
Two boxes are connected to each other. The system is released from rest and the 2.00kg box falls through a distance of 1.00m. what is the tension in the connecting string
A window air-conditioner unit absorbs 9.70×104J of heat per minute from the room being cooled, What is the energy efficiency rating of the unit
A 20 cm radius air duct is used to replenish the air of a room 9.2 m multiplied by 5.5 m multiplied by 5.0 m every 10 min. How fast does air flow in the duct
An ideal spring is used to fire a 15.0-g block horizontally. The spring has a spring constant of 40 N/m, The kinetic energy of the pellet as it leaves the spring is
Sketch a PV diagram and find the work done by the gas during the following stages. Find the net work done during the complete cycle
A ball rolls horizontally off the edge of a tabletop that is 1.40 m high. What was its speed at the instant it left the table
They stick together after the collision and are going 10 m/s after the collision. If they skid for 6seconds before stopping, how far did they skid?
A farsighted man uses eyeglasses with a refractive power of 3.57 diopters. Wearing the glasses 0.026 m from his eyes, What is the correct contact lens prescription
A laser produces a 5.10mW beam of light, consisting of photons with a wavelength of 637.8nm. How many photons are emitted by the laser each second
A rocket that is in deep space and initially at rest relative to an inertial reference frame has a mass of 2.80 105 kg, of which 1.92 105 kg is fuel. What is the rocket's thrust
An electromagnetic wave has an electric field strength of 145 V/m at a point P in space at time t. What is the electric field energy density at P
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