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A ball is projected upward from the bottom of a tower which is 375 feet high and at the same instant; another ball is dropped from the top of the same tower. If the balls meet at a point half-way between the top and the bottom of the tower, find with what initial velocity was the ball projected upward?
A highway curves to the left with radius of curvature R = 27 meter. The highway's surface is banked at = 30 degree, Find how fast can the car take this curve without skidding to the outside of the curve
Lightbulbs with the power ratings giving in the figure are connected in a circuit as shown. Find the power dissipated to each bulb
what is the frequency hz of an oscillator with a period of 20 seconds? show how to solve please how much force is
A 50-gram ice cube at -30 degrees celcius is heated until 45g hasbecome water at 100 degree celcius and 5g has become steam at 100degree celcius, how much heat was added to accomplish this
a particle rotates in a circle with a centripetal acceleration of 18.36 meters per second squared. if the radius is
the back wall of a home aquarium is a mirror that is a distance of 46.0 cm away from the front wall. the walls of the
A baseball is thrown with an initial horizontal speed of 20 m/s, and an initial vertical speed of 10 m/s. Find the horizontal distance where the baseball will hit the ground, and the total time of fight. Assume g = 10 m/s2
A 330-g air track cart on a horizontal air track is attached to a string that goes over a pulley with a moment of inertia of 5.00 x 10-6 kg?m2 and a radius of 1.35 cm. Write Newton's second law equation for each of the three objects
Acharge of q= +7.50μC is located in an electric field. The x andy components of the electric field are Ex = 6.00 * 10^3 N/C and Ey= 8.00x 10^3 N/C, respectively, What is the magnitude of the force on the charge
A 11 kg bucket of water is raised from a well by a rope. If the upward acceleration of the bucket is 2.2 m/s2, find the force exerted by the rope on the bucket of water
a 28000 kg rocket has a rocket motor that generates 309200 n of thrust.what is the rockets initial upward
Derive an expression for the surface temperature of the Sun, in terms only of its solid angle, its flux per unit wavelength f(lambda1) at Earth at one wavelength (lambda 1) and its fundamental constants
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