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At the surface of a certain planet, the gravitational acceleration g has a magnitude of 13.0 m/s2. A 22.0 kilogram brass ball is transported to this planet. Find the mass of the brass ball on the Earth and on the planet (in kg)? Find the weight of the brass ball on the Earth and on the planet (in N)?
Two cars start from rest at a red stop light, When the light turns green, both cars accelerate forward, finally catching the blue car just as the blue car comes to a stop, How fast is the blue car going 9 seconds after it starts
question what is the probability of the electron in thee ground state of a hydrogen atom being found outside a sphere
a bullet with a mass of 5.13 g and a speed of 595 ms penetrates a tree to a depth of 3.93 cm.a use work and energy
What is the influence of friction on banked highway turns? To address this question, first consider a car that encounters a circular highway curve of radius 256m banked toward the turn center.
A mining lift, with a 80kg cage, should be able to pull up to the surface ten 90kg miners, from a 20m deep well, in 20s. If the gearboxes available have an efficiency of 75%, what should be the power rating of the DC motor used. If the driving gear p..
A ball is held on an incline at the height of 72 cm. it is then released so that the ball rolls down the incline. At the bottom of the incline there is a loop where the ball rolls around in. If the loop is 62 cm high at its highest point what is the ..
If we imagine an electron as orbiting the proton, with the orbit of radius 5 x 10 ^-11 m, what is the total energy of the atom
A 0.954-kg toy car is powered by 2 C cells (3.00V total) connected directly to a small DC motor. The car has an effective energy conversion efficiency of 52.6%, What is the average current supplied to the car\'s motor
an apparatus that liquefies helium is in a room maintained at 306 k. if the helium in the apparatus is at 4.0 k what is
Find the magnetic field at P and P' on the axis of a circular coil of radius a = 20.7 cm (see figure below). The coil consists of 10 turns of wire carrying a current of 4.07 A in the direction indicated. (Hint: the magnetic field on the axis of a ..
An alpha particle is moving at a speed of 5.0 × 105 m/s in a direction perpendicular to a uniform magnetic field of strength 0.040 T. What is the radius of the path of the alpha particle
Two wooden crates rest on top of one another. The smaller top crate has a mass of m1 = 16.0 kg and the larger bottom crate has a mass of m2 = 90.0 kg. what is the acceleration of the lower crate
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