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Q1. A person with a mass of 103 kg is standing on a scale that reads weight in newtons inside of an elevator. If the elevator accelerates upward at 3.2 m/s2, what does the scale read?
Q2. Throughout a physics experiment, helium gas is cooled to a temperature of 12.0 at a pressure of 0.130. What are (a) mean free path in the gas, (b) rms speed of the atoms, and (c) the average energy per atom?
Q3. A race car has a mass of 709 kg. It starts from rest and travels 37.0 m in 4.0 s. The car is uniformly accelerated throughout the entire time. What net force is exerted on it?
A candle is on the axis of a 15-cm-focal-length concave mirror, 36 cm from the mirror. Is the image real or virtual
Rank the magnitudes of the forces exerted on the following particles from largest to smallest. In your ranking, display any cases of equality. (Use only ">" or "=" symbols. Do not contain any parentheses around the letters or symbols.)
A basketball of mass 0.45 kg is dropped from rest from a height of 1.22 m. It rebounds to a height of 0.72 m. How much mechanical energy was lost during the collision with the floor
Using their ship’s engine, they pull on the asteroid with a force of 490 N. Initially the tug and the asteroid are at rest, 450 m apart. Explain how much time does it take for the ship and the asteroid to meet?
Torque can be calculated by multiplying the force (N) applied at 90 degrees to the lever arm at a distance (m) from the pivot point (point of rotation), the compound SI unit for the torque is N*m. If the force (at 90 degrees to the lever arm) appl..
Suppose the second distance d were traveled in the opposite direction; you forgot something and had to return home at the same constant speed as found in part (a). What is the average velocity for this trip.
Do you agree with IBM's employment response to competition from software development contractors in India, like Wipro, that are expanding into IT consulting services? Why or why not.
Suppose you're building a scale model of the hydrogen atom, How many miles away (1 mi = 1.61 Ã- 105 cm) should the electron be placed
stronomers discover an exoplanet (a planet of a star other than the Sun) that has an orbital period of 3.13 Earth years in its circular orbit around its sun, Find the radius of the exoplanet\'s orbit
A proton is located at the origin, and a second proton is located on the x-axis at x=6.00 fm. (a) compute the electric potential energy associated with this configuration.
A proton moves at constant velocity in the +y direction, by a region in which there is an electric field and a magnetic field. The electric field is in the +x direction, and has magnitude 700 V/m. The magnetic field is in -z direction, and has ma..
A dolphin located in seawater at a temperature of 25 °C emits a sound directed toward the bottom of the ocean 200m below. How much time passes before it hears an echo.
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