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A 1320-kg racecar is driving around a circular track of radius 161 m. In the instant shown in the figure, the vehicle has a forward speed of 31.9 m/s and is slowing at a rate of 4.95 m/s2. What is the magnitude of the net force acting on the vehicle at this time and the force\'s direction relative to the velocity?
Light of wavelength 580nm illuminates a diffraction grating. The second-order maximum is at angle 41.5 degrees
In order to clearly read a book 24 cm away, a farsighted girl needs an image to be 35 cm from her eyes. What focal length is necessary for lens in her eyeglasses.
A dynamite blast at a quarry launches a rock straight upward, and 2s later it is rising at a rate of 15m/s. assume air resistance has no effect on the rock, analyse its speed (a) at launch and (b) 5s after launch.
Stan accelerates from a standing start at 2 m/s^2 and one second later Kathy accelerates from a standing start at the same position at 4 m/s^2. how long does it take Kathy to catch Stan
A house is 30.0 ft long and 25.0 ft wide, and has 8.0 ft high ceilings. What is the volume of the interior of the house
A skateboarder shoots off a ramp with a velocity of 5.7 m/s, directed at an angle of 53° above the horizontal. how far is this point horizontally from the end of the ramp
A 3.5 m long, 310 kg steel beam extends horizontally from the point where it has been bolted to the framework of a new building under construction. A 70 kg construction worker stands at the far end of the beam.
The electric field between two square metal plates is 130 N/C. The plates are 1.0 m on a side and are separated by 3.0 cm, Calculate the charge on each plate
When the space between two parallel plates is devoid of matter, the capacitance is .47 micro farrads. The dielectric constant is
The sound intensity of a whisper is 1.0x10^-10 W/m^2 at one meter distance from the source. At what distance does the intensity level drop by an additional 1dB
An 24 g rifle bullet traveling 370 m/s buries itself in a 4.8 kg pendulum hanging on a 2.6 m long string, which makes the pendulum swing upward in an arc. find the maximum vertical displacement of the pendulum.
Explain how fast must the candy bar travel to have the same 106 joules in the form of kinetic energy?
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