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The following physics responses are provided by a student and, as such, should be considered in that context. While every effort is made for accuracy, absolute correctness cannot be fully guaranteed.
Maria throws two stones from the top edge of a building with a speed of 20 m/s. She throws one straight down and the other straight up. The first one hits the street in a time t1. How much later is it before the second stone hits?4 s
The information on a one-gallon paint can is that the coverage, when properly applied, is 450 ft2. One gallon is 231 in3. What is the average thickness of the paint in such an application?0.0036 in
Doubling the radius of a sphere results in increasing its volume by a factor of8
A physics class in a large lecture hall has 150 students. The total mass of the students is about ____ kg.10^4
The length and width of a standard sheet of paper is measured, and then the area is found by calculation to be 93.50 in2. The number of significant figures in the width measurement must be at least:4
Water flows into a swimming pool at the rate of 8.0 gal/min. The pool is 16 ft wide, 32 ft long and 8.0 ft deep. How long does it take to fill? (1 U.S. gallon = 231 cubic inches)64 hours
When was the existence of the neutron confirmed?1932
Calculate (0.82 + 0.042) * (4.4*10^3), keeping only significant figures.3800
One year is about ____ seconds while one day is exactly ____ seconds.3.16*10^7, 86400
The distance to the Andromeda Galaxy is estimated at about 2*10^6 light years. A light year is the distance traveled by light in one year; if the speed of light is 3*10^8 m/s, about how far is it from our galaxy to Andromeda? (1 year = 3.15*10^7 s)2*10^22 m
Note the expression: y = x2. Which statement is most consistent with this expression?if x doubles, then y quadruples
The mass of the sun is 2.0*10^30 kg, and the mass of a hydrogen atom is 1.67*10^-27 kg. If we assume that the sun is mostly composed of hydrogen, how many atoms are there in the sun?1.2*10^57 atoms
Note the expression: y = A/x3. Which statement is most consistent with this expression?if x is halved, y is multiplied by eight
The number 0.00017 has how many significant figures?2
A cereal box has the dimensions of 0.19 m X 0.28 m X 0.070 m. If there are 3.28 feet per meter, then what is the volume of the box in cubic feet?0.13 cubic feet
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