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an automobile having a mass of 1000 kg is driven into a brick wall in a safety test the bumper behaves like a spring
if three 08 m fan blades are connected to a motor and accelerated uniformly from rest to 54 rpm in 7 minutesa determine
an object with a mass of 4kg is on a table and 2m away from another object with mass 10kg the this object with mass 5kg
a baking dish is removed from a hot oven and placed on a cooling rack as the dish cools down to 34deg c from 189deg c
a gamma-ray photon produces an electron-positron pair each with a kinetic energy of 255 kev what was the energy of the
a photon emitted as a hydrogen atom undergoes a transition from the n 5 state to the n 2 state the energy of the
suppose an astronomical telescope is being designed to have an angular magnification of 316 if the focal length of the
a spaceship travels toward the earth at a speed of 097c the occupants of the ship are standing with their torsos
a find the force p that must be applied to a piston of area1010cm2to produce sufficient fluid pressure to support a car
white light is incident on a soap film n 130 in air the reflected light looks bluish because the red light 695 nm is
a ball of mass 58 kg and radius 13 cm rolls without slipping horizontally at 56 ms and hits a spring attached to a wall
a two-slit experiment with slits separated by 35 10-4 m produces a second-order maximum at an angle of 00670dega find
a lens for a 35-mm camera has a focal length given by f 47 mma how close to the film should the lens be placed to form
a converging lens f1 240 cm is located 560 cm to the left of a diverging lens f2 -280 cm an object is placed to the
a research balloon bound for the stratosphere is filled at sea level with 800 m3 of helium whose initial temperature is
a person 16 m tall stands 49 m from a reflecting globe in a gardena if the diameter of the globe is 27 cm where is the
an object with a height of 42 cm is placed 23 m in front of a convex mirror with a focal length of -040 m find the
a 22 nc charge is placed at the origin of an x-y coordinate system a 16 nc charge is placed at coordinate 0 8cm and a
a guitar string with mass density 000021 kgm is l 095 m long on the guitar the string is tuned by adjusting the
a 1 kohm resistor is placed in series with the 05 mh inductor and the 001 f capacitor what is the resonant frequency of
a stone is thrown at an angle of 30the degrees above the horizontal from the top edge of a cliff with an initial speed
a suspicious-looking man runs as fast as he can along a moving sidewalk from one end to the other taking 200 s then
a photon with a wavelength of 370times1013 m strikes a deuteron splitting it into a proton and a neutrona calculate the
two sets of christmas lights are available for set a when one bulb is removed the remaining bulbs remain illuminated
in a hurricane the air density 12kgm3 is blowing over the roof of a house at a speed of 104kmhr what is the lifting