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a 1600 kg car traveling at 17.5 m/s to the south collides with a 3900 kg truck that is initially at rest at a stoplight. the car and truck stick together and move together after the collision. what is the final velocity of the two-vehicle mass? answer in units of m/s.
An 0.8kg baseball with an initial velocity of 40m/s is hit with a baseball bat so that its recoil velocity is 60m/s in the exact opposite direction. what is the average force the bat puts on the ball
a rod extending between x0 and x14.0 cm has uniform cross-sectional area a9.00 cm2. its density increases between its
The brakes are applied to a car traveling on a dry, level highway. A typical value for the magnitude of the car's acceleration is 4.55 m/s2. how long does it take to stop and how far does it travel
A 1500kg car starts from rest and drives around a flat 52-m-diameter circular track. at what time does the car begin to slide out of the circle
Light at wavelength 589 nm from a sodium lamp is incident perpendicularly on a grating with 40900 rulings over width 82 mm
Space invaders land on earth. On the invaders' temperature scale, the ice point is at 25°I (I = invader), and the steam point is at 153°I.
A physician is making an image with ultrasound of initial intensity 2000 W/m^2. What will be the intensity at this depth if the physician changes the frequency to 5.0 MHz
A bullet of mass 0.002 kg moving at 421 m/s impacts a large fixed block of wood and travels 6.1 cm before coming to rest. find the force exerted by the wood on the bullet
two charges -15 microc and 5.1 microc are fixed in place and separated by 4.4 m. a at what spot along a line through
An electron in a hydrogen atom is orbiting the nucleus at 2.2x106 m/s. If we treat the electron as a classical current loop orbiting the nucleus
A bartender slides a beer mug at 1.8 m/s towards a customer at the end of a frictionless bar that is 1.4 m tall. What are the speed and direction of the mug at impact
A parallel-plate capacitor has plates with anarea of 427 cm2 and anair-filled gap between the plates that is 2.37 mm thick. The capacitor is charged by a battery to575 V and then is disconnected from the battery.
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