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A 1800 kg car traveling north (+) at 70 km/h collides at an intersection with a 2000 kg car traveling west (-) at 64 km/h. The two cars stick together. What is the total momentum of the system before the collision?
Suppose that the spring is ideal and that the distance by which the spring is compressed is negligible compared to H.
The speed of sound in air is 332 m/s at 0°C. It increased 0.60 m/s for each degree above zero. compute the speed of sound at the temperature of the room.
a map suggest that atlanta is 730 miles in a direction of 5.00°north of east of dallas find net displacement vector from dallas to chicago
A circuit consists of a 12.0-V battery connected to three resistors (41ohms , 19ohms and 110ohms ) in series. Part A:Find the current that flows through the battery. Answer in mA.
Light from an argon laser strikes a diffraction grating that has 5 310 grooves per centimeter. calculate vthe wavelength of the laser light
Two astronauts are, 4.86 m apart in their spaceship, speaking to each other. How far away from the Earth is the spaceship
Use Newton law to determine the force applied to the backrest when a 150-lb person leans 40% of his or her body weight against it. Determine the constant requiered for the spring
A heat engine operating at maximum efficiency has an efficiency of 25%. The temperature of the cold reservoir is 300 K. What is the temperature of the hot reservoir
question1a wire has a mass of 1.00 gcm is positioned on a horizontal surface with the coefficient of friction of 0.250.
A parallel plate capacitor has a charge on one plate of q = 1.3E-06 C. Each square plate is d1 = 2.2 cm wide and the plates of the capacitor are separated by d2 = 0.65 mm, What is the voltage between the plates
A disk with moment of inertia I1 rotates about a frictionless vertical axle with angular speed wi. find the ratio of the final to the initial rotational energy
A hydrogen atom initially in the ground state absorbs a photon, which excites it to the = 4.00 state, estimate the frequency of the photon
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