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A 70-kg astronaut is space-walking outside the space capsule and is stationary when the tether line breaks. As a means of returning to the capsule he throws his 2.0-kg space hammer at a speed of 14 m/s away from the capsule. At what speed does the astronaut move toward the capsule?
If the Hawaiian hot spot is a fixed hot spot, which of directions is closest to the direction that the Pacific Plate was apparently moving as the Emperor Seamount Chain formed.
You're an optometrist, mounting a projector at the back of your 3.8m -long exam room, 2.6m above the floor. At what height should you center the pattern on the wall
A dc motor is connected to a constant emf of 15.6 V. The resistance of its windings is 2.0 ohms. What is the back emf induced in the windings at normal speed
A 10-turn ideal solenoid has an inductance of 3.5 mH. When the solenoid carries a current of 8.0 A the magnetic flux (in mWb) through each turn is
A glass window 0.35cm thick measures 84cm by 84cm. how much heat flows through this window per minute if the inside and outside temperture difference differ by 15 degree Celceus
Initially unpolarized light is sent into a system of three polarizing sheets whose polarizing directions make angles of ?1 = ?2 = ?3 = 50 deg with the direction of the y-axis
A plate carries a charge of -3.9 µC, while a rod carries a charge of +2.2 µC. How many electrons should be transferred from the plate to the rod, so that both objects have the same charge.
Find the coefficient of kinetic friction between a 4.2 kg block and the horizontal surface on which it rests if an 92 N/m spring must be stretched by 1.8 cm to pull the block with constant speed
A projectile is fired with an initial speed of 68.8 at an angle of 37.8 above the horizontal on a long flat firing range. Find out the maximum height reached by the projectile.
The starship Enterprise speeds by you at a speed of 0.960c. It is measure in your frame to be 100 m long. How fast did you appear to be traveling according to Data
A closely wound rectangular coil of 95.0 turns has dimensions of 21.0cm by 48.0cm. What is the average emf induced in the coil
A large circus ride has a centripetal acceleration at 6.0 m/s2. If the circular ride has a radius of 11.0 m, what is its velocity at the edge
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