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Erica (35 kg) and Danny (48 kg) are bouncing on a trampoline. Just as Erica reaches the high point of her bounce, Danny is moving upward past her at 4.3 m/s. At that instant he grabs hold of her.
What is their speed just after he grabs her?
Express your answer to two significant figures and include the appropriate units.
A step-up transformer has 300 turns on its primary coil and 90000 turns on its secondary coil if the current flowing through the secondary is 5 amps what is the current flowing in the primary.
A student uses an audio oscillator of adjustable frequency tomeasure the depth of a water well. What is the depth of the well
A block is projected with a speed of 3.0 m/s on a horizontal surface. estimate how far does the block slide before coming to rest
Refer to Interactive Solution 25.21 for help with problems like this one. How far from the wall should the mirror be located
Two small non conducting spheres have a total charge of 85.2. When placed 1.09 apart, the force each exerts on the other is 10.4 and is repulsive. What is the charge on each.
A 57.0-g tennis ball is traveling straight at a player at 21.0 m/s. The player volleys the ball straight back at 25.0 m/s. what average force acts on the ball
Khristian is a 6-year-old boy who is brought in for evaluation by his parents. The parents are concerned that he has a really deep cough that he just can't seem to get over. The history reveals that he was in his usual state of good health until appr..
*Percentages do not add up to 100 due to rounding, approximation, and ignoring water vapor and all minor and trace gases. *Weight % is found by multiplying the volume (%) by the molecular weight of that gas and dividing by the average molecular we..
Is it the most desirable situation to have both richness and diversity in a community and what steps can be taken to increase these attributes in a community?
A 12-kg hammer strikes a nail at a velocity of 8.5 m/s and comes to rest in a time interval of 8.0 ms. What is the average force acting on the nail
The density of ice is 917 kg/m3, and the density of sea water is 1025 kg/m3. What is the weight of the heaviest bear that the ice can support without sinking completely beneath the water
The punter on a football team tries to kick a football so that it stays in the air for a long "hang time". If the ball is kicked with an initial velocity of 25.0 m/s at an angle of 60.0 degrees above the ground, illustrate what is the "hang time"?
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