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A researcher is trying to shoot a tranquilizer dart at a 2.2-m -tall rhino that is 130m away. Its angular size as seen during the rifle telescope is 9.9?
What is the magnification of the telescope?
A 2400 kg car moving at an initial speed of 20 m/s along a horizontal road skids to a stop in 66 m.
A brick is initially 10.74 cm high and an aluminum can is initially 10.75 cm high. By how much must their temperatures be raised in order for the brick
A spring loaded ballistic pendulum gun requires an increasing force to load. When loading a ball of mass 0.054 kg, Calculate the work required to load the gun
An elevator weighing 2500 N ascends at a constant speed of 8.0 m/s. How much power must the motor supply to do this
A 6.250 keV x-ray photon strikes a carbon atom and is scattered with a Compton scattering with one of the carbon’s electrons. The energy of the scattered photon is measured to be 6.175 keV. What is the wavelength of the scattered photon? During what ..
During a drag race, a car is initially at rest on a long straight track. Find how far does the car travel from the time that it starts moving until it comes to a complete stop
A 3.90-kg object is attached to a spring and placed on frictionless, horizontal surface. Find the total energy of the oscillating system
a 216 kg log pulled up a ramp by means of a roe that is parallel to the surface of the ramp. the ramp is inclined at 30
Our closest stellar neighbor , alfa-centauri , is 4.3 light years away.it has been suggested that TV programs from our planet have reached this star and may have been viewed by the hypothetical inhabitants of a hypothetical planet orbiting this st..
the intensity of the sound wave from a jet airplane is 9.1 wm2 at a distance of 120 m. at what rate does the jet
A super tanker with the mass of 3.36 × 109 kg is moving with a constant velocity. Its engines generate a forward thrust of 4.11 × 105 N. Determine (a) magnitude of the resistive force exerted on the tanker by the water and (b) magnitude of the upward..
A block attached to a spring of unknown spring constant oscillates with a period of 2.0 seconds. What is the period when the mass is doubled?
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