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A 1000 kg car approaches an intersection traveling north at 20 m/s. A 1200 kg car approaches the same intersection traveling east at 22 m/s. The two cars collide at the intersection and lock together. Ignoring any external forces that act on the cars during the collision, what is the velocity of the cars immediately after the collision?
Household wiring composed of aluminum wire with cross-section area 3.1 x10?6 m2 carries a current of 2.5 A. At what speed are the electrons traveling in this power line
A cylindrical diving bell3.5 m in diameter and 4.4 m tall with an open bottom is submerged to a depth of 160m in the ocean. The temperature of the air at the surface is 21 C, and the air’s temperature 160m down is 5.8C. The density of sea water is 10..
radioactive decay of granite and other rocks in earths interior provides sufficient energy to keep the interior molten
An SUV of mass 1.80 * 103 kg is traveling eastboundat 15m/s when it collides witha compact car (mass 900 kg )traveling westbound at -15 m/s. What is the change in kinetic energy of the two-car system
Mars rotates on its axis once every 1.02 days (almost the same as Earth does). (a) Find the distance from Mars at which a satellite would remain in one spot over the Martian surface. (Use 6.42 1023 kg for the mass of Mars.) m (b) Find the speed of th..
The wheel in the figure has eight equally spaced spokes and a radius of 34 cm. It is mounted on a fixed axle and is spinning at 2.1 rev/s. What minimum speed must the arrow have
light is incident on an equilateral glass prism at a 45 degree angle to one face. calculate the angle at which light
A 0.00275-kilogram air inflated balloon is given an excess negative charge, q1 = -3.50 × 10-8 C, by rubbing it with a blanket. what polarity of charge must the rod possess
two stones are thrown simultaneously one straight upward from the base of a cliff and the other straight downward from
q1. a 1250 n uniform beam is attached to a vertical wall at one end and is supported by a cable at the other end. a w
Deuterium is a heavy isotope of Hydrogen with a nucleus containing one proton and one neutron. In the Balmer series n=4 goes to n=2 line in a hydrogen spectrum had a nearby weak neighboring line. What is the separation of wavelength of these lines? (..
A car starts from rest and accelerates uniformly over a time of 5.21 seconds for a distance of 110 m. Determine the acceleration of the car
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