What is the radius of curvature of the path of a 3.0-keV proton in a perpendicular magnetic field of magnitude 0.80 T?
a. 9.9 mm
b. 1.1 cm
c. 1.3 cm
d. 1.4 cm
e. 7.6 mm
a
You might also like to view...
A charge Q is uniformly distributed along the x axis from x = a to x = b. If Q = 45 nC, a = ?3.0 m, and b = 2.0 m, what is the electric potential (relative to zero at infinity) at the point, x = 8.0 m, on the x axis?
a. 71 V b. 60 V c. 49 V d. 82 V e. 150 V
A stream of water is leaking from the roof of a train into the cab below, to the dismay of the passengers in the cab. The train is moving with a constant speed of 100 km/hour. An observer from outside the train sees the situation through the train window as the train passes by. Which observer(s) see a parabolic path for the water as it moves through the air of the cab?
1.the passengers within the cab 2.neither the observer from outside the train nor the passengers within the cab 3.both the observer from outside the train and the passengers within the cab 4.the observer from outside the train
A mass m = 4.0 kg is connected, as shown, by a light cord to a mass M = 6.0 kg, which slides on a smooth horizontal surface. The pulley rotates about a frictionless axle and has a radius R = 0.12 m and a rotatinal inertia I = 0.090 kg?m2. The cord does not slip on the pulley. What is the magnitude of the acceleration of m?
?
?
a.
?2.4 m/s2
b.
?2.8 m/s2
c.
?3.2 m/s2
d.
?4.2 m/s2
e.
?1.7 m/s2
The sky is flat, like a sheet of paper, and hence angular diameter is the distance measured along that flat sheet of paper
a. True b. False Indicate whether the statement is true or false