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Estimate the average kinetic energy of the particles in the Sun. Assume that it is made of atomic hydrogen and that its average temperature is 100,000 K. The mass of the Sun is 2 x 1030kg. K=2.07x10-18J
For how long would the Sun shine using this energy if it radiates 4 x 1026W/s?
Two wheels have the same mass and radius of 5.0 kg and 0.38 m,respectively. One has (a) the shape of a hoop andthe other (b) the shape of a solid disk. Thewheels start from rest and have a constant angular accelerationwith respect to a rotational axi..
an insulated beaker with negligible mass contains liquid water with a mass of 0.280kg and a temperature of 85.0?c .how
A small rock is thrown from the edge of the roof of a building with an initial velocity that has magnitude of v=20 m/s and a direction of 53.1 degrees above the horizontal. What is the maximum height about the ground reached by the rock during its ..
If 3.65 x 10-4 J of work are required to move 26.2 µC of charge from one point to another, What is the electric potential difference between the two points
A particle with charge of 4 microcoloumbs is at the origin, another identical particle is placed 2 m from the origin on thepositive x-axis and another 2 m on the positive y-axis.
a shotputter throws the shot with an initial speed of 15.0ms at a 45.0 angle to the horizontal. calculate the
A kid is pulling a 15 kilogram box up a 3.5-m high, 24o ramp with a force of 77 Newton parallel to the ramp. Find the box change in kinetic energy from bottom of ramp to the top of the ramp
The lift-tong mechanism shown consists of twin four-bar linkages and is used to lift a 40-kg machine component. Knowing that LAB = 36 mm, determine the smallest allowable value of the coefficient of static friction between the component and the gr..
A silver wire 1.7 millimeter in diameter transfers a charge of 70 C in one h and ten min. Find what is the magnitude of the drift velocity of the electrons
On a summer day, the air conditioning breaks down and the air inyour classroom becomes very warm and muggy with a vapor pressure of20 hPa and a temperature of 25 degree Celsius. what is the virtul temperature of the air?
Our Milky Way galaxy is 100000 ly in diameter. A spaceship crossing the galaxy measures the galaxy's diameter to be a mere 1.0 ly. What is the speed of the spaceship relative to the galaxy
A 1d collision occurs between a rocket ship and an asteroid. In the rest frame of the rocket ship, the asteroid is traveling at 0.81c. What is the momentum of the asteroid in the ships rest frame O
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