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A solid block is suspended from a spring scale. If the reading on the scale when the block is completely immersed in water is 34.0 N, and the reading when it is completely immersed in alcohol of density 806 kg /m3 is 34.7 N, what are the block's volume and density?
A racquetball with a diameter of 5.6 cm and a mass of 42 g is cut in half to make a boat for American pennies made after 1982. How many pennies can be placed in the racquetball boat without sinking it
q1. compute earths gravitational force on the shuttle astronauts while orbiting at an altitude of 220 miles or 354 km
Tarzan has a mass of 75.0 kg and is swinging on a vine that is 8.00 meters long. What is the maximum speed at which he can swing
A soccer ball is kicked with an initial speed of 27m/s at an angle of 23 degrees with respect to the horizon. Find the maximum height reached by the ball
A surface completely surrounds a 4.5 × 10-6 C charge. Find the electric flux through this surface when the surface is (a) a sphere with a radius of 0.66 m, (b) a sphere with a radius of 0.30 m, and (c) a cube with edges that are 0.65 m long.
A skier of mass 100 kg starts from rest and comes down a slope of constant angle 25 degrees with the horizon. What is the length of the slope
If the coefficient of kinetic friction between a 35.0 kg crate and the floor is 0.25, what horizontal force is required to move the crate at a steady speed across the floor
Two equal point charges of magnitude 4.0 ?C are situated along the x-axis at x1 = -2.0 m and x2 = -2.0 m. What is the electric potential energy of this system of charges
A light string is wrapped around a solid cylinder and a 200 g mass hangs from the free end of the string, what is the tension and the mass of the cylinder
A car is doing a loop-the-loop trick, the loop has a radius of.4 m. What is the minimum initial speed the car must have in order to remain in contact with the circular track at all times
A dolphin leaps out of the water at an angle of 36.1 ° above the horizontal. Find the magnitude of the vertical component of the velocity
An ideal, monatomic gas is allowed to expand quasi-statically and adiabatically from an initial volume Vi = 3.0 liter and initial temperature Ti = 360 K to a final volume of Vf = 8.2 liter. What is the change in the internal energy of the gas
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