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Physics
Aliya Reese
When a gas is compressed in a cylinder fitted with a piston, the work done is 526 J. At the same time, 260. J of heat is released to the surroundings. (a) Is this process endothermic or exothermic? endothermic exothermic (b) Calculate the change in the internal energy of the system and state whether the internal energy has increased or decreased.
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Physics
Kristian Leon
2 Resistors of resistance, R = (100 + - 3) Ohm, R2 = (200+-4) Ohm are connected in Parallel and Series.
Find the absolute error and % error in the measurement of equivalent resistance are in each combinations I. e Series and Parallel ... ?
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Physics
Gunnar Crosby
How often do the earth's magnetic poles switch?
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Physics
Rey Hickman
From the half-life for 14c decay, 5715 yr, calculate the age of the shroud.
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Physics
River Morrow
Which best compares the particles of the substance when it is in region 1 with the particles of the substance when it is in region 3? The particles are slower in region 3. The particles are more orderly in region 1. The particles have more kinetic energy in region 1. The particles have less freedom of motion in region 3.
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Physics
Corey Frederick
What is negative acceleration?
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Physics
Trace
A wave with a period of 0.008 second has a frequency of
A. 80 Hz.
B. 125 Hz.
C. 800 Hz.
D. 12.5 Hz.
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Physics
Allison Horn
IF a particular galays has a total mass of 10 to the 59 grams and the average star in that galaxy has a mass of 10 to the 34 grams, approximately how many stars are there in that galaxy? Give your answer to the nearest whole power of 10 by entering the exponent only.
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Physics
Daniel Benitez
Gneiss is a metamorphic rock that is formed when granite is subjected to extreme heat and pressure. This occurs in when:
shallow seas evaporate
mountains collide
fossil sediments form layers
magma cools and hardens underground
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Physics
Immanuel Chen
A softball is hit high into the air. As it rises, the softball
A) loses kinetic energy and loses potential energy.
B) loses kinetic energy and gains potential energy.
C) gains kinetic energy and gains potential energy.
D) gains kinetic energy and loses potential energy.
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Physics
Tyke
If san andreas fault slips 2.5 cm each year how far would it separate in 100 years
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Physics
Hernandez
Tools used as nut crackers by chimps and birds
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Physics
Spot
Given that 5.0 resistor, a 9.0 resistor, and a 13.0 resister are connected in series with a 24.0 V battery, calculate the current in each resistor.
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Physics
Myah Shepard
The electric current running through the wire coil in an electric motor exerts force directly onto A) the battery. B) an aluminum axle. C) a powerful magnet. D) a rubber insulator.
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Physics
Gretta
a copper rod of length 27.5 m has its temperature increases by 35.9 degrees celsius. how much does its length increase? (unit=m)
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