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Lithium has two stable isotopes, 6Li and 7Li. If a sample is composed of 39% of the lighter isotope (with the balance being 7Li), calculate the average molar mass of the sample.
in order to stop a 1500kg car that is originally moving at 25m/s, and if the car stops over a distance of 50m, what average force must act on the car
Sherlock Holmes examines a clue by holding his magnifying glass (with a focal length of 15.0 cm) 10.0 cm away from an object. Find the image distance and the magnification. explain the image that he observes.
suppose a fuel-cell generator was used to produce electricity for a house. if eachh2molecule produces 2e- how many
A robot probe drops a camera off the rim of a 239m high cliff on Mars, where the free fall acceleration is -3.7m/s^2. Find out the velocity with which the camera hits the ground.
Two particles each have a mass of 5.5 x 10-4 kg. One has a charge of +4.8 x 10-6 C, and the other has a charge of -4.8 x 10-6 C. How fast is each particle moving when the separation between them is one-third its initial value
for all problems of this assignment consider nuclear power plant npp with pressurized water reactor pwr. reactor have
Suppose that the rod is held at rest horizontally and then released. What is the angular acceleration of the rod immediately after it is released
Two overlapping beams of light of different wavelength ?a = 840 nm and ?b = 460 nm co-propagate through air, What is the angle between the beams travelling through the material
the latent heat of fusion for water is 33.5 times 104 jkg while the latent heat of vaporization is 22.6 times 105 jkg.
Two stars in a binary system orbit around their center of mass. The centers of the two stars are 7.50 1011 m apart. What is the mass of the smaller star
An infinitely long cylinder has a circular cross section of radius a and its axis along the z axis. A steady current I is distributed uniformly over the cross section and is in the positive z direction. Please, read the document carefully, it ..
an 18-kg groceryi cart is pushed at constant speed along an aisle by a force of 12N. Find the work done by each of the forces on the cart
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