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A mass less spring is hanging vertically. With no load on the spring, it has a length of 0.34 meter. When a mass of 0.63 kilogram is hung on it, the equilibrium length is 0.91 meter. At t = 0, the mass (which is at the equilibrium point) is given a velocity of 4.94 m/s downward.
At t=0 28 second, estimate what is the acceleration of the mass? (Positive for upward acceleration, negative for downward)
A ball rolls horizontally off the edge of a tabletop that is 1.20 m high. It strikes the floor at a point 1.63 m horizontally away from the table edge. What was its speed at the instant it left the table
An eagle (mA = 4.3 kg) moving with speed vA = 7.8 m/s is on a collision course with a second eagle (mB = 5.6 kg) moving at vB = 10.2 m/s in a direction perpendicular to the first
A 85-tonne (1 t = 1000 kg) spacecraft moving in the + x-direction at 0.38m/s docks with a 70-tonne craft moving in the -x-direction at 0.62m/s
The emissivity of the human skin is 97.0 percent. Use 35.0 °C for the skin temperature and approximate the human body by a rectangular block with a height of 1.61 m, Calculate the power emitted by the human body
A steel section of the Alaskan pipeline had a length of 63.8 mand a temperature of 21.8 °C when it was installed. What is itschange in length when the temperature drops to a frigid -46.6°C?
Monochromatic light falls on a slit that is 2.60*10-3 mm wide. If the angle between the first darkfringes on either side of the central maximum is 35.0degrees(dark fringe to dark fringe), what is the wavelength of the light used
When a guitar string is sounded along with a 434Hz tuning fork, a beat frequency of 1.00Hz is heard. When the same string is sounded along with a 426Hz tuning fork, the beat frequency is 9.00Hz. What is the frequency of the string?
A kg steel ball strikes a wall with a speed of m/s at an angle of with the surface. It bounces off with the similar speed and angle. If the ball is in contact with the wall for s, what is the average force exerted on the ball by the wall.
A rectangular loop consists of N = 100 closely wrapped turns and dimensions a = 0.4m and b= 0.3m. What is the expected direction of rotation of the loop
On a dry road, a car with good tires may be able to brake with a constant deceleration of 3.19 m/s2. How long does such a car, initially traveling at 22.2 m/s, take to stop
A worker pushed a 27kg block 9.2 m along a level floor atconstant speed with a force directed 32o below thehorizontal. find the increase in thermal energy of theblock-floor system
What is the magnitude of the acceleration of a modified Atwood machine if the mass of the cart is 3 kg and the hanging mass is 12 kg
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