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Romeo is chucking pebblesgently up to Juliet's window, and he wants the pebbles to hit thewindow with only a horizontal component of velocity. He is standingat the edge of a rose garden 8.0m below her windowand 9.0m from the base of the wall. How fast are the pebbles going when they hit her window?
A star radiates energy at the rate of 2.2 1026 W. Calculate the star's loss of rest mass per second
You are on a team that will recover a ship from the sea. You have been given the task to perform a few calculations to move your team forward. find the tension when the body is completely out of water
A beam of light in the air makes an angle of 47.5 degrees with the surface (not the normal) of a glass plate having a refractive index of 1.66. (a) what is the angle between the reflected part of the beam and the surface of the glass?
An ore sample weighs 14.00 N inair. When the sample is suspended by a light cord and totallyimmersed in water, Find the total volume and the density of the sample
In daily life we see many cases of people who are caught misrepresenting things who soon thereafter are excused and accepted by their contemporaries. How is This different in science.
Suppose you are standing at the bottom of a swimming pool looking up at the surface, which we assume to be calm. Looking up, you will see a circular window to the "outer world." If your eyes are approximately1.6meters beneath the surface, what is ..
An explosion breaks an object into two pieces, one of which has 1.48 times the mass of the other. How much kinetic energy did the heavier piece acquire
In the x-y plane, a charge of -4.6 microcoulombs is on the x-axis at the point (-30cm,0cm), calculate the magnitude and direction of the resultant electric field E at the origin (0cm,0cm)
A ball has a diameter of 3.9 cm and average density of 0.0839 g/cm3. What force is required to hold it completely submerged under water
If a 200 lb bungee jumper jumps from a bridge 150 ft and touches the top of the river. If the cord absorbs 14 percent of the energy how far will be man be at the Top of the next bounce from the river bottom.
A rescue helicopter lifts a 60 kg person straight up by means of a cable. The person has an upward acceleration of 0.70 m/s2, How much work is done by the person's weight
The mass of a robot is 3780 kg. This robot weighs 3540 N more on planet A than it does on planet B. What is the difference MA - MB in the masses of these planets
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