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OlgaM077 [116]
3 years ago
5

Activity level for the following samples?

Physics
1 answer:
Oxana [17]3 years ago
8 0
<span>- 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 S 50 R 51 1st Pass Pages  of Inertia 94 4-2 Force and Mass 95 4-3 Newton's Second Law 97 4-4 The Force The decay constant is related to the half-life by (Equation M-70).</span><span>
</span>
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What is the acceleration of a proton moving with a speed of 6.5 m/s at right angles to a magnetic field of 1.8 t ?
defon
The magnetic force acting on the proton is 
F=qvB \sin \theta
where
q is the proton charge
v is its speed
B is the intensity of the magnetic field
\theta is the angle between the direction of v and B; since the proton is moving perpendicular to the magnetic field, \theta=90^{\circ} and \sin \theta=1, so the force becomes
F=qvB

this force provides the centripetal force that keeps the proton in circular motion:
m \frac{v^2}{r} = q v B
where the term on the left is the centripetal force, with
m being the mass of the proton
r the radius of its orbit

Re-arranging the previous equation, we can find the radius of the proton's orbit:
r= \frac{mv}{qB}= \frac{(1.67 \cdot 10^{-27} kg)(6.5 m/s)}{(1.6 \cdot 10^{-19} C)(1.8 T)}=3.77 \cdot 10^{-8}m

And now we can calculate the centripetal acceleration of the proton, which is given by
a_c =  \frac{v^2}{r}= \frac{(6.5 m/s)^2}{3.77\cdot 10^{-8}m}=1.12 \cdot 10^9 m/s^2

7 0
3 years ago
How much energy does a pair of 800w hair straighteners transfer every second?
babymother [125]
Power is a measure of the rate of energy or work done on a system. It has units of energy per time. In SI, Joules per second and is equal to the units of Watts. So, for an 800 Watts hair straightener, the energy transfer per second would be 800 Joules.
3 0
3 years ago
Read 2 more answers
The narrator of a story
34kurt
The answer is d! I’m happy to help :)
7 0
3 years ago
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How long would it take for a car to travel 200 km if it has an average speed of 55 km hr?
Rainbow [258]

Answer:

3.63 hours or 3 and 37.5 minutes

Explanation:

200/55

Hope this helps :)

6 0
3 years ago
a man can swim in still water with speed of 2kmhr-1 wants to cross a river 200m wide flowing with 1kmhr-1 . Calculate the time t
tangare [24]

Answer:

d savage

Explanation:

3 0
3 years ago
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