A liquid has a specific gravity of 0.68. What is its density?
A)
680 kg/m3
B)
1360 kg/m3
C)
1000 kg/m3
D)
6800 kg/m3
A
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A 10.0-m-long copper wire with cross-sectional area 1.25 × 10^–4 m2 is bent into a square loop, and then connected to a 0.25-V battery. The loop is then placed in a uniform magnetic field of magnitude 0.19 T. What is the maximum torque that can act on this loop? The resistivity of copper is 1.70 × 10^–8 ?·m
a. 2.2E+2 N·m b. 1.8E+2 N·m c. 9.7E+2 N·m d. 5.6E+2 N·m
The position of a 0.700-kg mass undergoing simple harmonic motion is given by x = (0.160 m) cos (?t/16). What is its position at t = 5.80 s?
a. –0.0670 m b. 0.0622 m c. 6.25 m d. 0.0670 m e. 0.610 m
A ball is thrown straight up in the air. At what position is its kinetic energy a maximum? At what position is the gravitational potential energy of the ball-Earth system a maximum? Consider only the trip up
1.The maximum kinetic energy occurs at the top of the ball's trajectory and the maximum gravitational potential energy occurs at the top of the ball's trajectory. 2.The maximum kinetic energy occurs at the point of release and the maximum gravitational potential energy occurs at the point of release. 3.The maximum kinetic energy occurs at the point of release and the maximum gravitational potential energy occurs at the top of the ball's trajectory. 4.The maximum kinetic energy occurs at the top of the ball's trajectory and the maximum gravitational potential energy occurs at the point of release.
A device that measures absolute air pressure is called a barometer
Indicate whether the statement is true or false