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The 500[m] Short Track speed skating Olympic world record is 39:937[sec] held by American JR Celski. Calculate JR's average speed in [miles=hr] during his record- setting performance.
It is proposed that future space stations create an artificial gravity by rotating. What rotation period will provide "normal" gravity
n = 3.60 mol of Hydrogen gas is initially at T = 340 K temperature and pi = 3.32×105 Pa pressure, How much entropy did the gas emit
A horizontal slingshot consists of two light, identical springs (with spring constants of 27.7 N/m) and a light cup that holds a 1.47-kg stone, determine the system's total mechanical energy
A person is performing a knee extension exercise with a 100 N weight acting at the ankle. What is the torque at the knee necessary to maintain a knee joint angle of -60q relative to the right horizontal passing through the knee joint
Light of wavelength 189 nm shines on a metal surface. 3.94 eV is required to eject an electron. What is the cutoff wavelength for this metal
A diatomic molecule is excited to its first rotational energy level, corresponding to J = 1. what is the angular speed of the molecule about its center of mass
three resistors of 75, 50 , 100 ohms are connected to a 9 volt source. determine the power dissipated by the circuit
A charge of 140 µC is at the center of a cube of edge 60.0 cm. No other charges are nearby. (a) Find the total flux through each face of the cube. (b) Find the flux through the whole surface of the cube. N·m2/C (c) Would your answers to parts (a) ..
A film of oil with refractive index 1.45 floats on water with refractive index of 1.33. Determine the thickness of the oil film
A molecule is shown schematically. The distance from the center of the larger atom to the center of the smaller atom is d = 0.96, and the angle between the smaller atoms is θ = 105.6°. Find out the center-to-center distance between the smaller ato..
A stuntman drives a car over the top of a hill, the cross section of which can be approximated by a circle of radius 160 m. What is the greatest speed at which he can drive without the car leaving the road at the top of the hill?
A 46.7 g ball of copper has a net charge of 1.5 µC. What fraction of the copper's electrons have been removed
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