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2 kg block slides on a rough horizontal surface. the block hits a spring with a speed of 2.4 m/s and compresses it a distance of 11 cm before coming to rest. if the coefficient of kinetic friction between the block and the surface is 0.46, what is the force constant of the spring?
A moving sidewalk 95 m in length carries passengers at a speed of .53 m/s. One passenger has a normal walking speed of 1.24 m/s, If she walks at her normal walking speed on the sidewalk, how long does it take to travel the fill length
A 63.0 ?F capacitor is connected to a generator operating at a low frequency. at what frequency will the fuse burn out
Points A and B have electric potentials of 257 V and 129 V, respectively. When an electron released from rest at point A arrives at point C its kinetic energy is KE1, What is the electric potential at point C
A tow truck pulls a car 4.00 km along a horizontal roadway using a cable having a tension of 910 N, How much work does the cable do on the car if it pulls horizontally
small object is placed to the left of a convex lens and on the optical axis. What is the position of the image formed by the lens
An airplane propeller is 2.38m in length (from tip to tip) and has a mass of 117kg. What is the angular acceleration of the propeller
A cube has sides of length = 0.320 . It is placed with one corner at the origin. The electric field is not uniform but is given by -4.95 2.17 .Find out the electric flux through each of the six cube faces.
An interferometer is used to measure the length of a bacterium. The wavelength of the light used is 650 nm. How long is the bacterium
Calculate the net impulse delivered to a 138-kg quarterback initally running at 4.5 m/s if he's hit by a defending player and slowed to a speed of 1.1 m/s
An electromagnetic wave has the wavelength of 42.6 ?m and intensity of 78.5 W/m^2. Find the momentum of one photon
A 62 kg person on skis starts from rest down a hill sloped at 40° from the horizontal. The coefficient of friction between the skis and the snow is 0.10.
A circular saw blade of diameter 0.175m starts from rest. In a time interval of 5.60s it accelerates with constant angular acceleration to an angular velocity of 140rad/s
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