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A reconnaissance plane flies 693 km away from its base at 830 m/s, then flies back to its base at 1245 m/s. What is its average speed? Answer in units of m/s.
An object with a mass of 33.0 g displaces 870.0 ml of water when it is completely immersed. What is the buoyant force on the mass? (Use g=9.8 N/kg as necessary.)
A 100kg runner is heading north at a speed of 2.0 m/s and a50kg runner is headed south at 3.0m/s. Find the total momentum vector of the system comprised of the runners.
A car plus its driver has a mass of 1400 kg. when the driver takes his foot off the accelerator, the car slows from 30 m s^-1 to 20 m s^-1 in 20 s. how much work was done by dissipative forces
An electron in the n = 6 state of a hydrogen atom makes a transition to the n = 3, What is the wavelength of the photon emitted
A long straight copper wire is statically charged with a chargedensity of −4.88 nC/m. At what radial distance from theaxis of the wire is the strength of the electric field equal to+7.76 N/C? Express your answer as a positivevalue.
A system has a heat source supplying heat at a rate of 187 W and is doing work at a rate of 130.899998 W. At what rate is the internal energy of the system changing.
You have 3.0 moles of helium gas initially at a temperature of 350 K, and a pressure of 0.20 x Patm, How much heat flows into the gas
In Chapter 10 in the textbook, we saw that the Achilles tendon will stretch and then rebound, storing and returning energy during a step. What is the spring constant of her Achilles tendon
neutron stars consist only of neutrons and have unbelievably high densities. a typical mass and radius for a neutron
A 2.6kg block slides along a frictionless surface at 2.0m/s . A second block, sliding at a faster 5.0m/s, collides with the first from behind and sticks to it. What was the mass of the second block
Te orbit of an asteroid extends from Earths to Jupiter's, just touching both. Find the maximum and minimum orbital speeds of the asteroid
The electric field on the axis of a uniformly charged ring has magnitude400 kN/C at a point 6.8 cm from the ring center. The magnitude 21 cm from the center is 150 kN/C ; in both cases the field points away from the ring. Discover the ring's radius.
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