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A raw egg can be dropped from a third-floor window and land on a foam-rubber pad on the ground without breaking. A 89-g egg is dropped from a window located 32.2 m above the ground and a foam-rubber pad that is 15.0 cm thick stops the egg in 9.2 ms.
a) How much is the pad compressed__cm?
b) What is the average force exerted on the egg after it strikes the pad___N? Note: Assume constant upward acceleration as the egg compresses the foam-rubber pad.
The temperature and pressure in a star's atmosphere are 6.40 multiply.gif 106 K and 0.0260 Pa. Calculate the rms speed of free electrons
A technician wraps wire around a tube of length 33 cm having a diameter of 8.1 cm. what is the self-induced emf in the solenoid
What is the energy density in the electric field at the surface of a 2.00-cm-diameter sphere charged to a potential of 2000V
A 18.0cm × 18.0cm square loop of wire lies in the xy-plane with its bottom edge on the x-axis. The resistance of the loop is 0.530?. What is the size of the induced current in the loop at t = 0.550s
A uniform steel beam has a mass of 1640 kg. On it is resting half of an identical beam. What is the vertical support force at each end.
Suppose the current suddenly increases to 1.55 A in the same direction as before, due to an increase in speed of the bar. Find the emf induced in the rod
The seed has a mass of 250 mg., a functional lift-to-drag ratio of 4.0, a lift coefficient under the same conditions of 0.3, and a wing area of 5000 mm2. How long will it take to hit the ground
A rock is dropped from a tree of height 25 m into a lake (depth 5.0 m) below. What is the total elapsed time
How would you determine the density of the paper that you use in a photocopy machine and computer printer, given the fact that a single 8.5[in] by 11[in] sheet has a thickness that is too small to directly measure with a ruler
A 6kg block, starting at rest, is pulled up a ramp by a motor coiling a rope such that the tension is 60N. How much energy is supplied by the motor to move the block up the ramp
A banked circular highway curve is designed for traffic moving at 85 km/h. The radius of the curve is 158 m. Traffic is moving along highway at 48 km/h on the rainy day. What is the minimum coefficient of friction between tires and road that would al..
You are a space traveller and you land on the surface of a new planet. You decide to drill a tunnel through the center of the planet to the opposite side of the planet. How long will it take to make it to the other side of the planet
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