A 90.0 N crate of apples sits at rest on a ramp that runs from the ground to the bed of a truck. The ramp is inclined at 20 
to the ground. What is the force exerted on the crate by the ramp?
A. 86.9 N
B. 84.6 N
C. 75.8 N
D. 30.8 N
E. 38.5 N
B. 84.6 N
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First Law of Thermodynamics: A sealed rigid tank contains 29 moles of an ideal gas, at an initial temperature of 270 K. The pressure of the gas is increased until the final pressure equals 1.90 times the initial pressure. The heat capacity at constant pressure of the gas is 24.0 J/mol ? K. How much heat is absorbed by the gas during this process? (R = 8.31 J/mol ? K)
A. 110 kJ B. 170 kJ C. 230 kJ D. -52 kJ E. 7.0 kJ
What was the one most important event in the Precambrian?
What will be an ideal response?
A one ohm, a two ohm, and a three ohm resistor are connected in parallel in an electric circuit: The resistor dissipating the most power will be the ________ ohm resistor.
Fill in the blank(s) with the appropriate word(s).
Which type of NEO explodes in the atmosphere before reaching the Earth's surface?
Which type of NEO explodes in the atmosphere before reaching the Earth's surface?
- Asteroid
- Meteroite
- Bolide