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A plane drops a hamper of medical supplies from a height of 5460 m during a practice run over the ocean. The plane's horizontal velocity was 131 m/s at the instant the hamper was dropped.
What is the magnitude of the overall velocity of the hamper at the instant it strikes the surface of the ocean? The acceleration of gravity is 9.8 m/s2.
Suppose you were to wrap the planet Mars in aluminum foil and place a charge Q on it, What is the capacitance of Mars in this case
If we observe a stars spectrum and find that the peak power occurs at the border between blue and ultraviolet light, what is the surface temperature of the star in Celsius
Explain any advantages in using Conservation of Energy method to determine initial projectile velocity
A 5000 kg helicopter accelerates upward at 0.50 m/s2 while lifting a 2000 kg car. What is the lift force exerted by the air on the rotors? Evaluate the tension in the cable that connects the car to the helicopter?
a horizontal force of 50 n is applied for 10 s on a box of mass 20kg placed on a friction-less horizontal table .
a radiator has an emassivity of .90 and its exposed area is 1.23 m^2. What is the heat flow rate from the radiator
The human eardrum has an area of 5.0×10-5 m2. What is the sound power at the threshold of pain
You've decided to protect your house by placing a 5.8-m -tall iron lightning rod next to the house. What minimum diameter must the rod have
a certain second-order reaction has a rate constant of 1.10times10-3 at 27 and an initial half-life of 226. what is
A particle with a mass of 3.65×10?24 kg and a charge of 6.40×10?19 C starts at rest and is accelerated for a distance of 0.104 m through a uniform electric field having strength E = 7.25×104 N/C
A 2000 kg car is slowed down uniformly from 21.0 m/s to 10.00 m/s in 3.60 s. (a) what average total force acted on the car all through that time? (b) How far did the car travel all through that time.
A charged particle moving with speed, v, enters a region containing a uniform magnetic field, Starting from Newton's second law, derive the formula for the radius of the particle's orbit in terms of its mass, m, speed, v, and the magnetic field, B
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