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A 38g glass thermometer reads 20.7C before it is placed in 122mL of water. When the water and thermometer come to equilibrium, the thermometer reads 42.2C. What was the original temperature of the water?
a 55.0 kg diver fallsfreely from a diving platform that is 3.00 m above the surface of the water in apool. what are her kinetic energy withrespect to the water's surface
In making raspberry jelly, 887 g of raspberry juice is combined with 930 g of sugar. The mixture starts at room temperature, 23.0°C, and is slowly heated on a stove until it reaches 220°F, How much energy does the mixture absorb
q1. a planet of mass 6.00 1025 kg is in a circular orbit of radius 2.00 1011 m around a star. the star exerts a force
In a football game a kicker attempts a field goal. The ball remains in contact with the kicker's foot for 0.0437 s, determine the vertical components of the launch velocity
In a large centrifuge used for training pilots and astronauts, a small chamber is fixed at the end of a rigid arm that rotates in a horizontal circle. How long is the arm of the centrifuge
The Earth's rate of rotation is constantly decreasing, causing the day to increase in duration. In the year 2006 the Earth took about 0.840 s longer to complete 365 revolutions than it did in the year 1906. What was the average angular acceleration o..
a physics professor demonstrates the doppler effect by tying a 550 hz sound generator to a 1.0-m-long rope and whirling
Which vector has the largest x component and y component
An outside loudspeaker (considered a small source) emits soundwaves with a power output of 90 W. Find the intensity level in decibels at that distance
A singly charged positive ion has a mass of 2.16 × 10^-26 kg. Find the radius of the ion's path in the field
The third order fringe of a 525 nm light is observed at an angle of 15 degrees when the light falls on two narrow slits. How far are the slits apart
A ball rolling on a table has a velocity with rectangular components vx = 0.70m/s and vy = 0.50m/s. What is the direction of the ball's displacement
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