Answer:
102 km/h
Explanation:
x = distance of car A at any time from the intersection
x₀ = distance of car A at some time = 0.4 km
= Speed of car A = 75 km/h
y = distance of car B at any time from the intersection
y₀ = distance of car B at some time = 0.3 km
= Speed of car B = 70 km/h
d = distance between the two cars at any time
d₀ = distance between the two cars at some time
v = rate of change of distance between the cars
Using Pythagorean theorem
d²₀ = x₀² + y₀²
d²₀ = 0.4² + 0.3²
d₀ = 0.5 m
Distance between the two cars at any time is given using Pythagorean theorem as
d² = x² + y²
Taking derivative both side relative to "t"
(0.5) v = (0.4) + (0.3)
(0.5) v = (0.4) (75) + (0.3) (70)
v = 102 km/h
B = 0.018 T Ans,
Since, it is moving in a circular path, thus, centripetal force will act on it i.e.
F =
where, m is the mass of the object, v is the velocity and r is the radius of circular path.
And, since a positive charge is moving, it will create magnetic force which is equal to F = qvB
where q is the charge, v is the velocity of the particle and B is the magnetic field.
Now, the two forces will be equal,
i.e.
= qvB
⇒
= qB
⇒B =
<span>putting the values, we get,
</span>
use q = 1.6 * 10^ -19
⇒ B = 0.018 T
Answer:
When one system vibrating at its natural frequency is put closer to a stationary system, the stationary system receives impulses.
At resonant frequency, the system vibrating at its own natural frequency suddenly goes on decreasing in order to cope with neighboring system.
These decrease in frequency is known as damping.
1. It’s true
4 ,7 ,8 is correct
Energy, heavier atoms atoms, neutron and a proton are the products of a fusion reaction.
<h3>
What are the products of a fusion reaction?</h3>
Nuclear fusion is a type of reaction in which two or more atomic nuclei fuse or combine to form heavy nuclei and subatomic particles such as neutrons or protons and release of energy.
So we can conclude that Energy, heavier atoms, neutron and a proton are the products of a fusion reaction.
Learn more about reaction here: brainly.com/question/11231920
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