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One end of a string 7.8 meter long is moved up and down with simple harmonic motion at a frequency of 72.0 Hertz. The waves reach the other end of the string in 0.34 second. Obtain the wavelength of the waves on the string?
You have two weeks vacation and want to travel to a gambling space colony located 3.22 x 10^14 meters from Earth. how fast must you travel to accomplish this
A photon of wavelength 4.220×10?2nm strikes a free electron and is scattered at an angle of 38.0?from its original direction
A 2,493-kg car is moving down a road with a slope (grade) of 14% at a constant speed of 13 m/s. compute the direction and magnitude of the frictional force
a charged material causes the deflection of a positively charged electroscope to increase. does the charged material
Two lamps marked 60-watts, 120 volts and 40-watts, 120 volts are connected in series across a 120-volt line. What is the power consumption in each lamp
Two resistors, of R1 = 2.07 ? and R2 = 6.97 ?, are connected in series to a battery with an EMF of 24.0 V, Find the current I1 through the first resistor
a person of weight 80 kg jumped off a platform of height 1 m and safely landed on his feet. what is the magnitude of
A weight lifter struggles but manages to keep a heavy barbell above his head. Infrequently he slips and the barbell starts to fall downward, however he always recovers. Contrast the force exerted by the weight lifter on the barbell to that exerted by..
A 0.30 kg puck, initially at rest on a frictionless horizontal surface, is struck by a 0.20 kg puck that is initially moving along the x axis with a velocity of 1.8 m/s. Find the fraction of kinetic energy lost in the collision
A 2.30×103 ? resistor and a capacitor are connected in series and then a 12.00 V potential difference is suddenly applied across them. Calculate the time constant of the circuit
Keli weighs 456 Newton and she is sitting on a playground swing that hand .5 meter above the ground. find how much work was done on the swing by friction
A uniform cylinder of radius R and mass M is mounted so as to rotate freely about a horizontal axis that is parallel to, What is the rotational inertia of the cylinder about the axis of rotation
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