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a 1580 kg block of granite is pulled up an incline at a constant speed of 1.43 m/s by a cable and winch. The indicated distances are d1 = 46.3 m and d2 = 37.0 m. The coefficient of kinetic friction between the block and the incline is 0.395. What is the power due to the force applied to the block by the cable?
Two steel wires of the same length, one with radius r and the other with radius 2r, are connected together, end to end, and tied to a wall. How far does the point where the two wires meet move
How high will a 1.85 rock go if thrown straight up by someone who does 75 of work on it? Avoid air resistance.
At its highest temperature, a space heater has a resistance of 35.5 Ω when it is plugged into a wall outlet supplying a peak voltage of 162.6 V sinusoidally at 60 Hz
100 g ball of clay is thrown horizontally with a speed of 13m/s toward a 900g block resting on a frictionless surface. It hits the block and sticks. The clay exerts a constant force on the block during the 7 ms it takes the clay to come to rest re..
The last piece has 4 times as much mass as each of the other pieces. Illustrate what is the magnitude of the velocity of the last piece?
Find the approximate mass of the dark and luminous matter in the Milky Way galaxy. Assume the luminous matter is due to approximately 1011 stars of average mass 1.5 times that of our sun
what force is required to slow a 1250kg car traveling 115km/h to 30km/h within 3.50 s? how far does the car travel during its deceleration
For a movie scene, a 76kg stuntman drops from a tree onto a 51kg sled that is moving on a frozen lake with a velocity of 13m/s toward the shore. with what speed does he leave the sled
A 420 turn solenoid, 30 cm long, has a diameter of 2.4 cm. A short 20 turn coil is wound tightly around the center of the solenoid. what will be the induced emf magnitude in the short coil
A 65.1-kg circus performer is fired from a cannon that is elevated at an angle of 42.4° above the horizontal. find the effective spring constant of the firing mechanism
Two identical aluminium objects are insulated from their surroundings. Object A has a net charge of excess electrons. Object B is grounded. Which object is at the higher potential.
If you start with two sinusoidal waves of the same amplitude traveling in phase on a string and then somehow phase-shift one of them by 12.50 wavelengths
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