At t = 0, a wheel rotating about a fixed axis at a constant angular acceleration of -0.40 rad/s2 has an angular velocity of 1.5 rad/s and an angular position of 2.3 rad. What is the angular position of the wheel at t = 2.0 s?

a. 4.9 rad
b. 4.7 rad
c. 4.5 rad
d. 4.3 rad
e. 4.1 rad


C

Physics & Space Science

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Energy in Nuclear Reactions: Consider the nuclear reaction N + He ? O + H. The known atomic masses areN: 14.003074 u

/>He: 4.002603 uH: 1.007825 uO: 16.999131 uWhat is the Q-value (or reaction energy) of this reaction? (1 u = 931.5 MeV/c2)

A. 1.191 MeV
B. -1.191 MeV
C. 1.279 × 10-3 MeV
D. -1.279 × 10-3 MeV

Physics & Space Science

What is the minimum amount of energy required for a 70.0-kg climber carrying a 20.0-kg pack to climb Mt. Everest, which is 8850 m high?

a. 8.67 MJ c. 4.41 MJ b. 7.81 MJ d. 0.900 MJ

Physics & Space Science

The vertical speed of a projectile

a. is zero b. stays constant c. continuously increases d. continuously decreases e. sometimes decreases and sometimes increases

Physics & Space Science

Which of the following types of cloud is found at the highest altitudes?

What will be an ideal response?

Physics & Space Science