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A hollow spherical iron shell floats almost completely submerged in water. The outer diameter is 69.1 cm, and the density of iron is 7.87 g/cm3. Find the inner diameter, in cm.
A Ferris wheel is moving at an initial angular velocity of 1.0 rev/53 s. If the operator then brings it to a stop in 2.8 min, what is the angular acceleration of the Ferris wheel
A certain photon after being scattered from a free electron at rest moves at an angle of 120° with respect to the incident direction. what is the wavelength of the scattered photon
Converting sunlight to electricity with solar cells has an efficiency of 15%. It's possible to achieve a higher efficiency (though currently at higher cost) by using concentrated sunlight as the hot reservoir of a heat engine. What is the theoreti..
If the ball rebounds with the same speed and angle, what was the magnitude of the impulse delivered to it by the floor
Two objects attract each other gravitationally with a force of 2.5×10-10 while they are 0.60 apart. Their total mass is 5.0. Find out their individual masses.
A block slides down an inclined plane, starting from rest and being pushed with a constant acceleration of 5.20 m/s2 over a distance of 20.4 cm. Find the total time the block is in motion
A modem is designed to transmit at 100 kbps over a channel with 15 dB signal to nose ratio. Find the maximum symbols on the constellation of this modem.
An impulse of150 Ns is required to stop a person's head in a carcollision. If the face is in contact with the steering wheelfor 0:0304 s, what is the force on the cheekbone
A movie camera with a (single) lens of focal length 70 mm takes a picture of a person standing 29 m away. what is the height of the image in millimeters on the film
A beam of unpolarized sunlight strikes the vertical plastic wall of a water tank at an unknown angle. what angle does this beam make with the normal inside the water
A current of 48.6 mA exists in a wire for 1.20 minutes. What is the rate that charge passes a point in the wire
A school bus takes 0.89 h to reach the school from your house. If an average velocity of the bus is 21.1 km/h to the east, what is the displacement.
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