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Two particles are at the same point at the same time, moving in the same direction. Par-ticle A has an initial velocity of 7.7 m/sandnan acceleration of 2.5 m/s2. Particle B has an initial velocityof 3.4 m/s and an acceleration of 5 m/s2. At what time will B passA? Answer in units of s.
How far from the dog would the suitcase land? You can ignore air resistance.
A construction crew pulls up an 87.5-kg load using a rope thrown over a pulley and pulled by an electric motor. How much work was done by the motor
A block of mass .75kg is sliding along a frictionless table with height of 1.2m. The block travels the length of the 2.5m long table in 1.5 seconds and then leaves the table. What distance from the table did the block fall?
q1. a 260 wooden raft floats on a lake. when an 80 man stands on the raft it sinks 5.0 deeper into the water. when he
A girl is floating in a freshwater lake with her head just above the water. If she weighs 610 N, what is the volume of the submerged part of her body?
THe magnetic dipole moment of Earth has a magnitude 8*10^22 J/T. Assume that this is produced by charges flowing in Earth's molten outer core, what is the current that the charges produce
The maximum wavelength for which an electromagnetic wave can eject electrons from a platinum surface is 196 nm. what is the maximum speed of the ejected electrons
Two metal rods of equal length-one aluminum, the other stainless steel-are connected in parallel with a temperature of 10.0 Celsius at one end and 114 Celsius at the other end. Determine the length the rods must have
An object of mass 50.5 g is initially placed in boiling water so that it is at 101° C. Then the object is dropped into a calorimeter, Find the specific heat of the object
the second person is initially at rest. Illustrate what are the velocities of the two people after the snowball is exchanged? Disregard the friction between the skates and the ice.
A bat can detect small objects, such as an insect, whose size is approximately equal to one wavelength of the sound the bat makes. what is the smallest insect a bat can detect
A beam of hydrogen molecules (H2) is directed toward a wall, at an angle of 45° with the normal to the wall. What is the beam's pressure on the wall
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