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A raft of mass M with a man of mass m aboard stays motionless on the surface of a lake. The man moves a distance L relative to the raft with velocity v and then stops. Suppose the water resistance to be negligible,
a. Obtain the displacement of the raft relative to shore?
b. Obtain the horizontal component of the average force with which the man acted on the raft during the motion.
Equal masses of ice at an unknown temperature are added to water.Temperature of water is 20 degrees C. What is the initial temperature of ice
an electromagnetic wave strikes a 2.60 cm2 section of wall perpendicularly. the rms value of the waves magnetic field
When rolling a ball down an inclined plane, the ball rolls 1 cubit in ten seconds. How far will the ball have rolled from its starting point after 20 seconds
Suppose that a NASCAR race car is moving tothe right with a constant velocity of +97 m/s. What is the averageacceleration of the car? Twelve seconds later,the car is halfway around the track and traveling in the oppositedirection with the same speed...
A 60.0g ice cube can slide without friction up and down a 33.0 slope. what distance will it travel up the slope before reversing direction
question a sodium-vapor lamp has power output of 10.0 w. using 589.3 nm as the average wavelength of this source
A circuit consists of a 12.0-V battery connected to three resistors (41ohms , 19ohms and 110ohms ) in series. Part A:Find the current that flows through the battery. Answer in mA.
looking straight downward into a rain puddle whose surface is covered with a thin film of gasoline you notice a
A small electric immersion heater is used to boil 60.0 g of water for a cup of instant coffee. The heater is labeled 165.0 W, which means that it converts electrical energy to heat at this rate. Calculate the time required to bring this water from 13..
Electric Field Mapping? A) In an experiment you will have carbon paper with silver electrodes painted on them. The paper acts like an insulator and the electrodes act like conductors. What should the field be inside the conductors? What about the pot..
a beam of white light makes an angle of incidence of 38deg with a glass prism of index of refraction of 1.5 and
A ball of m1 is held slightly above ball of mass m2. The two balls are droped simultaneously, falling distance h vertically from rest. Calculate the height to which the first ball rebounds
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