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An 8.4kg crate is pulled 4.7m up a 30? incline by a rope angled 16? above the incline. The tension in the rope is 100N and the crate's coefficient of kinetic friction on the incline is 0.23.How much work is done by tension, by gravity, and by the normal force? What is the increase in thermal energy of the crate and incline?
A satellite of mass 5400kg orbits the Earth and has a period of 6580s, determine the magnitude of the Earth's gravitational force on the satellite
When one person was talking in a small room, sound intensity level was 60dB everywhere within the room. Then, there were 14 people talking in similar manner at the same time in the room, what was the resulting sound intensity level.
A ball is tossed from an upper-story window of a building. The ball is given an initial velocity of 8..00 m/s at an angle of 20.0 below the horizontal, Find the height from which the ball was thrown
While remodelling your garage, you need to temporarily splice, end to end, an 80 m long copper wire that is 1.130 mm in diameter with a 49.0 m long aluminium wire that has the same diameter. The maximum current in the wires is 2.00 A.
The string connecting the m1 and the m2 passes over a light frictionless pulley. Given m1 = 1.77 kg, m2 = 7.24 kg, m3=2.23 kg, and g = 9.8 m/s2. The acceleration of gravity is 9.8 m/s2 . Find the downward acceleration of m2 mass.
A truck weighs four times as much as a car. if the truck coasts into the car at 12km/h and they stick together, what is their fimal velocity.
A 380kg piano slides 3.2m down a 27â degrees incline and is kept from accelerating by a man who is pushing back on it parallel to the incline, What is the force exerted by the man
A point charge q1 = -2.3 x 10^ -6 C is located at the origin of a co-ordinate system. Another point charge q2 = 6.3 x 10^-6 C is located along the x-axis at a distance x2 = 6.1 cm from q1. 1) What is F12,x, the value of the x-component of the forc..
How numerous extra electrons are on this particular oil drop (given the presently known charge of the electron)?
Each surface exerts a force on the bottle that is perpendicular to the surface. What is the magnitude of each of these forces.
An electric iron connected to a 110V source draws 9A of current.show that the amount of heat generated in one minute is almost 60 kj.
The intensity of sunlight that reaches Jupiter (orbiting at about 5 AU) is approximately what fraction of that at Earths orbital distance.
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