The magnetic force acting on a charged particle moving perpendicular to the field is:
= qvB
is the magnetic force, q is the particle charge, v is the particle velocity, and B is the magnetic field strength.
The centripetal force acting on a particle moving in a circular path is:
= mv²/r
is the centripetal force, m is the mass, v is the particle velocity, and r is the radius of the circular path.
If the magnetic force is acting as the centripetal force, set equal to and solve for B:
qvB = mv²/r
B = mv/(qr)
Given values:
m = 1.67×10⁻²⁷kg (proton mass)
v = 7.50×10⁷m/s
q = 1.60×10⁻¹⁹C (proton charge)
r = 0.800m
Plug these values in and solve for B:
B = (1.67×10⁻²⁷)(7.50×10⁷)/(1.60×10⁻¹⁹×0.800)
B = 0.979T
The answer to your question will be C. because they are very inexpensive and are readily available but they will eventually deplete because we use them faster than they can be produced we use what has been building up.
Answer:
The subjective visual sensation related to the intensity of light emanating from a surface or from a point source.
Low-energy light bulbs also save money in the long run.
<h3>Mathematical operations</h3>
Cost of 1 low-energy bulb = 400 P
Cost of 1 filament buld = 50 P
Cost of electricity for 1 hour for low-energy bulbs = 0.2 p
Cost of electricity for 1 hour for filament bulb = 1.0 p
Total cost of electricity for 10,000 hours for low-energy bulb:
10,000 x 0.2 p = 2,000 p
Total cost of electricity for 10,000 hours for filament bulb:
10,000 x 1.0 = 10,000 p
Total cost of low-energy bulb + electricity = 2,000 + 400
= 2,400 p
Total cost of filament bulb + electricity = 10,000 + 50
= 10, 050 p
Thus, low-energy bulbs may have an initial higher cost, but they save a significant amount of money in the long run.
More on energy-saving bulbs can be found here:brainly.com/question/13144449
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Answer: True.
Explanation:
Since the gases are given momentum as they are ejected by the rocket engine, a rocket moves in space. Consider the rocket in space as it rests. The device does not have any momentum. Next, it ignites the engine. As the exhaust gases go in one direction, to keep the overall momentum of the device steady, the rocket goes in the other. This shift in momentum of the gases gives the rocket the "push" to move forward. This push is what we call the thrust of the rocket.
