A confined gas has an average energy/molecule of 60. meV. If the pressure is tripled and the volume is reduced by a factor of 3, what now is the average energy?
A) 0.18 eV
B) 0.10 eV
C) 0.06 eV
D) 0.02 eV
E) 0.03 eV
C
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A projectile is projected from the origin with a velocity of 20.0 m/s at an angle of 30.0 degrees above the horizontal. The projectile lands on a roof that is 4.00 m height. What is the velocity vector when the projectile hits the roof?
A. Vx = 17.3 m/s, Vy = +13.4 m/s B. Vx = 14.3 m/s, Vy = -3.23 m/s C. Vx = 15.2 m/s, Vy = -13.4 m/s D. Vx = 16.8 m/s, Vy = -3.95 m/s E. Vx = 17.3 m/s, Vy = -13.4 m/s
Differentiation is a process by which
A) denser materials like iron sank to the center of the Earth while less dense materials like rock rose to the surface B) the Earth's surface separated into continents and oceans C) convection mixed up the materials in the interior of the Earth D) less dense materials like rock sank to the center of the Earth while denser materials like iron rose to the surface
A charge of 20 nC is distributed uniformly along the x axis from x = ?2.0 m to x = +2.0 m. What is the electric potential (relative to zero at infinity) at the point x = 5.0 m on the x axis?
a. 57 V b. 48 V c. 38 V d. 67 V e. 100 V
If the volume of a container is decreased while the mass and temperature of the gas inside it stay constant, the pressure will increase
Indicate whether the statement is true or false