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When you look into a mirror you see yourself reversed left-to-right from how others see you. What you see in a mirror as your left side appears to someone else as your right side. If you tilt your head, the left and right sides of your face still appear reversed in the mirror. Using the law of reflection, explain why the top and bottom areas of your image are not reversed in a mirror. In other words, why does a mirror appear to only reverse things in the horizontal direction?
A jet rises vertically, caring a load of concrete to make the foundation for a ski lift. A 35 kilogram bag of concrete is resting on a scale in the jet. what is the jet's acceleration
A wheel consists of 20 thin spokes, each with mass 0.070kg , attached to a rim of mass 4.4kg and radius 0.85m. Find its rotational inertia
A galaxy located at a distance D of 1 million light years away has an angular size A= 5 degree. What is the approximate diameter of this galaxy
A projectile is fired with an initial speed of 65.8 m/s at an angle of 33.3? above the horizontal on a long flat firing range, Determine the total horizontal distance covered
A bottle has a mass of 35.00 g when empty and 98.44 g when filled with water. When filled with another fluid, the mass is 88.78 g. What is the specific gravity of this other fluid
A 45 kg figure skater is spinning on the toes of her skates at 1.0 rev/s. Her arms are outstretched as far as they will go. In this orientation, the skater can be modelled as a cylindrical torso (40 kg, 20 cm average diameter, 160 cm tall) plus two r..
Find the speed of light in diamond and flint glass
space vehicles traveling through earths radiation belts can intercept a significant number of electrons. the resulting
A person bounces up and down on a trampoline, while always staying in contact with it. What is the maximum speed attained by the person
A 92-kg skier is sliding down a ski slope that makes an angle of 40 degrees above the horizontal direction. what is the acceleration of the skier
An electron of momentum 300Mev/c is scattered at an angle of 10° by a calcium nucleus. Assuming no recoil, find the momentum transfer and its reduced de Broglie wavelength. Also calculate the Mott differential cross section (point-like nucleus).
For either type of coefficient of friction, what is generally assumed about the dependence of the value of the coefficient on the area of contact between the two surfaces?
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