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A beam of hydrogen molecules (H2) is directed toward a wall, at an angle of 45° with the normal to the wall. Each molecule in the beam has a speed of 2.8 km/s and a mass of 3.3 x 10^-24 g. The beam strikes the wall over an area of 4.5 cm2, at the rate of 10^22 molecules per second. What is the beam's pressure on the wall?
A skier starts from rest at the top of a hill. The skier coasts down the hill and up a second hill. The crest of the second hill is circular, What must be the height of the hill
0.550-kg glider, attached to the end of an ideal spring with force constant k = 440 N/m, undergoes SHM with an amplitude 0.040 m. Compute the maximum speed of the glider
A hotel elevator ascends 170m with a maximum speed of 4.4m/s. Its acceleration and deceleration both have a magnitude of 1m/s2.
A polar explorer pulls a sled on dry snow (the coefficient of kinetic friction is 0.12 for sled on snow). The rope attached to the sled pulls at an angle of 9° above the horizontal and the explorer pulls with with 600 N of force. The sled has a to..
A steady beam of alpha particles (q = + 2e, mass m = 6.68 x 10-27 kg) traveling with constant kinetic energy 26 MeV carries a current of 0.34 µA. If the beam is directed perpendicular to a flat surface, how many alpha particles strike the surface i..
A toboggan approaches a snowy hill moving at 10.9 m/s. The coefficients of static and kinetic friction between the snow and the toboggan are 0.470 and 0.320, Find the acceleration of the toboggan as it is going up the hill
The electric potential immediately outside a charged conducting sphere is 180 V, and 10.0 cm farther from the center of the sphere the potential is 130 V
Apply Newton's second law to the elevator and find the maximum upward acceleration for the elevator if the cables are not to break? Please Help Guys
A 1.6-m wire is wound into a coil with a radius of 4.07 cm. If this coil is rotated at 105 rpm in a 0.070-T magnetic field, what is its maximum emf
As a function of time t, force component Fx that acts on a 3.00 kg ice block that can move only along the x axis. At t=0, the block is moving in positive direction of the axis, with a speed of 3.0 m/s. what are its (a) speed and (b) direction of trav..
In a time of T seconds, a motorcycle can accelerate from rest to the speed v. Determine the speed of the motorcycle (in terms of v) 2T after starting
A 75 kg adult male is being tested for knee extension strength. The length of his calf segment is .38m. The combined calf/foot segment is 57% of the calf length from the knee joint. The radius of gyration of the calf/foot segment about its mass ce..
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