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It was a dark and stormy night, when suddenly you saw a flash of lightning. Three-and-a-half seconds later you heard the thunder. Given that the speed of sound in air is about 340 m/s, how far away was the lightning bolt?
On a spacecraft two engines fire for a time of 578 s. One gives the craft an acceleration in the x direction of ax = 5.33 m/s2, Calculate the magnitude of the initial velocity
If a mass of 1 kg is accelerated 1 m/s2 by a force of 1 N, illustrate what would be the acceleration of 10 kg acted on by a force of 20 N?
Four particles with masses 9kg, 4kg, 9kg, and 3kg are associated by rigid rods of negligible mass as shown. Assume the system rotates in the yz plane about the x axis with an angular speed of 9 rad/s. Find out the moment of inertia of the system a..
Determine the force of gravity between earth (mass =6.0x10^24kg) and the moon (mass= 7.4x10^22kg). The average earth-moon distance is 3.8x10^8m.
The rent revenue collected in advance is the only difference, and it is not repeated in October 20X5. Is this a temporary difference? Why or why not? Illustrate what is the accounting carrying value for the unearned rent at the end of 20X4? The tax b..
An object is found to have a weight in air of 500N. It is then tied to a string connected to a balance and immersed in water (density of water is 1000 kg/m3). The scale now reads 450 N. at last the object is immersed in oil and is found to have a ..
Calcualte the radiation dosage (in rads) for a 67-kg person that is exposed to 6.0 seconds to a 3.0 Ci source of beta radiation.
Now the gymnast (not holding any additional mass) walks directly above right support. What is the force the left support exerts on beam.
shallow glass dish whose width w is 4.40 cm. When an observer's eye is placed as shown, the observer sees the edge of the bottom of the empty dish, Find the height h of the dish
One object is at rest, and another is moving. The two collide in a one-dimensional, completely inelastic collision. Determine the final speed of the two-object system
A bicycle tire pump has a piston with area 0.44 in. If a person exerts a force of 30lbs on the piston while inflating a tire, what pressure does this produce on the air in the pump.
A 400 kg car sits 2 m to the right of a fulcrum assume car is on a weightless rod, how far to the left of the fulcrum should an effort of 200 N be applied to keep the system in quilibrium.
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