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A cannon has a barrel 5 m long and fires a 49 kg projectile with a muzzle velocity of 452 m/s. What is the average force on the projectile?
What are sunspots and how are they related to the Sun's magnetic field? Is the magnetic field stronger weaker in sunspots? How does the temperature in a sunspot relate to the temperature in the rest of the photosphere.
A nuclear power plant generates(output) 500 MW. it is 34% efficient, How much does the water temperature rise
When a liquid and its vapor are in equilibrium, the rates of evaporation of the liquid and condensation of the vapor are equal. Compute the rate of evaporation of mercury into a vacuum
A stone is dropped into a river from a bridge 43.90 m above the water. Another stone is thrown vertically down 1.00 after the first is dropped. The stones strike the water at the same time.
A spherical drop of water carrying a charge of 11 pC has a potential of 590 V at its surface (with V = 0 at infinity). What is the radius of the drop
A student in an undergraduate physics lab is studying Archimede's principle of bouyancy. The student is given a brass cylinder and using a triple beam balance finds the mass to be 1.25 kg
A sinusoidal wave travels along a stretched spring. A point along the string has a maximum velocity of 1.0 m/s and a maximum displacement of 2cm. What is the maximum acceleration at that point
The graph of two cars that collide shows that they intersect at a point 5.5m on a distance/time graph. The first car has a velocity of 0.39m/s. what does the steepness of the slope indicate
q1. the brick wall of thermal conductivity 0.91 wmdegrees c of a building has dimensions 2.9 m by 6 m and is 18 cm
A boy shoves his stuffed toy zebra down a frictionless chute, starting at a height of 1.67 m above the bottom of the chute and with an initial speed of 1.97 m/s. The toy animal emerges horizontally from the bottom of the chute and continues sliding a..
q1. two speakers 6.00 m apart are driven by the same audio oscillator so that each one produces a sound consisting of
A runner moving at a constant speed of 11.5 m/s rounds a curve of radius 6.15 m. Compute the acceleration of the runner
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