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Question1
The unique temperature of the water in the large bowl was 25°C. The temperature of a molecule that changes from liquid to gas is 100 °C. The relationship: 1 cup of water is 236 grams of water.
How many kilojoules (kJ) of energy were needed to “move” water from a large bowl to the small glass? Notes- Ignore an amount of water that was not “moved” water molecules have to warm AND change state?
Question2
Bob, who has a mass of 82, can throw a 900 rock with a speed of 26. The distance throughout which his hand moves as he accelerates a rock forward from rest until he releases it is 1.1 .What constant forces should Bob exert on a rock to throw it with this speed? If Bob is standing on frictionless ice, what is his recoil speed after releasing that rock?
Question3
a. considered frequency and draw the nodal maps (vertically). Suppose string density = 0.005 kg/m, and length between supports = 1.75 m
b. Fill in boxes for "Frequency from equation 1". Imagine the tube length = 50 cm
A block weighing 15.0 N rests on the floor. What force does the floor exert on the block
The walls of a blackbody cavity are at a temperature of 27 degrees C. find the frequency of the radiation of maximum intensity
A wave on a string is described by D(x,t) = (1.2 cm)sin[2 pi (x/(3.9 m) + t/(0.4 s) + 1)], where x is in m and t is in s. What is the wave number
A car of mass 1200 kg turns a corner inclined at 55 deg at a speed of 20 m/s. What is the maximum radius for the curve at which the car will not slide down the incline
A 130-g baseball, moving along the x-axis with speed 29.0 m/s strikes a fence at a 45 degree angle and rebounds along the y-axis with unchanged speed. Give x and y components of its change in momentum.
A gas is allowed to expand isothermally until it reaches its final volume and its pressure is 2.97 atm. Find the heat absorbed by the gas during this process
An iron bar 40 cm long is braised to a copper bar 50 cm long and of the same diameter. determine the temperature of the junction point
Slopping air track: A glider moves frictionlessly along an air track that has been tilted by 1.5 inches over a span of 1.00 meters. What is the expected acceleration of the glider
A bomb is designed to explode 2.00 s after it is armed. The bomb is launched from earth and accelerated to an unknown final speed. What is the final speed of the bomb just before it explodes
Two cars of 2000 %u2013kg each collide head-on while traveling at 75.0 miles per hour. What is the temperature increase of the cars
A radar for tracking aircraft broadcasts a 12.0GHzmicrowave beam from a 2.00m -diameter circular radar antenna, What is the diameter of the radar beam at a distance of 30.0km
Electron acquires 5x10^-16 kinetic energy when it is accelerated by an electric field from Plate A to Plate B, what is the potential difference Vba between the two plates
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