A proton is released such that it has an initial speed of 5.0 × 10^5 m/s from left to right across the page. A magnetic field of 1.2 T is present at an angle of 30° to the horizontal direction (or positive x axis). What is the magnitude of the force experienced by the proton? (qp = 1.6 × 10^-19 C)
a. 3.8 × 10^-14 N
c. 4.8 × 10^-14 N
b. 7.5 × 10^3 N
d. 1.3 × 10^-19 N
C
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According to Kepler's third law, calculate the orbital period of a planet approximately 6.0 AU away from the Sun
a. ˜6 years b. ˜15 years c. ˜30 years d. ˜36 years e. ˜214 years
Power: A 1321-kg car climbs a 5.0° slope at a constant speed of 80.0 km/h. Assuming that air resistance may be neglected, at what rate (in kW) must the engine deliver energy to the drive wheels of the car?
A. 25 kW B. 288 kW C. 38 kW D. 48 kW
If the density of the universe is at the critical density, then the geometry of the universe would follow ordinary Euclidean geometry
Indicate whether the statement is true or false
Which of the following situations is impossible?
A) An object has velocity directed east and acceleration directed east. B) An object has velocity directed east and acceleration directed west. C) An object has constant non-zero acceleration and changing velocity. D) An object has zero velocity but non-zero acceleration. E) An object has constant non-zero velocity and changing acceleration.