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Susan's 13.0 kg baby brother Paul sits on a mat. Susan pulls the mat across the floor using a rope that is angled 30°above the floor. The tension is a constant 32.0 N and the coefficient of friction is 0.210. Susan's 13.0 kg baby brother Paul sits on a mat. Susan pulls the mat across the floor using a rope that is angled 30° above the floor. The tension is a constant 32.0 N and the coefficient of friction is 0.210.
Ocean waves pass through two small openings, 21m apart, in a breakwater. You're in a boat 69m from the breakwater and initially midway between the openings, but the water is pretty rough. You row 37m parallel to the breakwater and, for the second tim..
Extreme-sports enthusiasts have been known to jump off the top of El Capitan, a sheer granite cliff of height 910 m in Yosemite National Park. How long is the jumper in free fall
In the example a sharp metallic tip is held just above a conducting surface with a voltage between the tip and the surface with a current flowing. How would the current vary with the separation between tip and sample (just the functional variation..
Solar energy originates in nuclear reaction, where mass energy changes the most in kinetic energy of photon. calculate how much mass, the Sun loses in second
What is the difference between a nonequivalent control group design and a pretest posttest control group design?
Riders on a Ferris wheel move in a circle with a speed of 4.50{\rm m}/{\rm s}, What is the diameter of this particular Ferris wheel
An empty spherical weather balloon with a mass of 5 kg has a radiusof 2.879 m when fully inflated with helium. what will be the acceleration of the balloon
A car completes one lap in a time of 19.3 s, with an average translational speed of 45.2 m/s. What is the radius of the track, and what was the car's average angular speed for that lap
A piston (with mass M = 2.0 kg) in a car engine is in vertical simple harmonic motion with amplitude A = 5.0 cm. What is the maximum velocity (m/s) of the piston
The coefficient of kinetic friction is 0.350. Illustrate what should be the magnitude of P, so that the net work done by it and the kinetic frictional force is zero?
A soccer player kicks a ball from ground level with an initial velocity of 25 m/s at an angle of 30° above the horizontal. After 2.0 s, how many meters above the projection point is the ball
An object 3 cm high is placed 6 cm from a Perspex plano-concave lens that has a radius of curvature of 6 cm. Take the refractive index of Perspex to be 1.5. Decide the focal length of the lens and draw a ray diagram showing the relative positions of ..
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