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A man pushes a block with a force of 350N for 15 seconds. What is the impulse on the block?
Two carts with masses of 10.60 kg and 2.50 kg, respectively, move in opposite directions on a frictionless horizontal track with speeds of 6.70 m/s and 3.50 m/s, in that order. The carts stick together after colliding head-on. Find the final speed of..
If a positron (a positively charged particle with the mass of the electron) and a proton go through the same potential difference, By what factor is the wavelength shorter
A car starts from rest and accletation uniformly for 10s to a velocity of 8m/s. Find the value of accleration, retardation and total time taken
The total translational kinetic energy of the molecules of a sample of gas at 447 K is 1.33 x 10^4 J, Find the average translational kinetic energy of a single molecule
When a rubber band is stretched a distance x, it exerts a restoring force F = -2x + 5x^5. What is the work done in stretching this rubber band from x=0 to x=2.
A uniform rod of mass 4.2 kg and a length of 1.0 m is hinged to a wall at the left end and held in a horizontal position by a taut string. find the resulting angular acceleration of the rod
A flat loop of wire consisting of a single turn of cross-sectional area 8cm2 is perpendicular to a magnetic field that increases uniformly in magnitude from 0.5 T to 2.5 T in a time of 1.9 s. Calculate the resulting induced current
A person's left eye has a near point of 18.0 cm and a far point of 2.50 m. What power contact lens would you recommend
A well-insulated, sealed container is fitted with a movable, frictionless piston. The piston is initially locked in place with a pin. The container is placed on a hot plate and temperature of the gas inside the container increases. The container is r..
A clown is using a concave makeup mirror to get ready for a show and is 26 cm in front of the mirror. The image is 70 cm behind the mirror. (a) Find the focal length of the mirror. (b) Find the magnification.
The ends of a thin bar are maintained at different temperatures. The temperature of the cooler end is 8°C, while the temperature at a point 0.13 m from the cooler end is 23°C and the temperature of the warmer end is 48°C. Assuming that heat flows onl..
A mass spectrometer is used to examine the isotopes of uranium. What is the distance between the impact points
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