Answer:
Given:
m=1000kg
F=8000 N
u=32m/s
v=0m/s
Required:
T=?
Solution:
F=m × a
8000N = 1000kg × a
a = 8m/s^2
Since it's deceleration -8m/s^2
a= v - u / t
-8m/s^2 = 0 - 32m/s / T
T = 4 s
Hence the car takes 4sec to stop
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Answer:
C)Earth's orbital speed is greater when it is closer to the Sun than when it is farther from the Sun.
Explanation:
We can use Kepler's 2nd law or the law of area to answer this question.
The law states that the rate of area swept out by a planet's orbit is same throughout the orbit. For the farthest point since the distance is large as compared to to the nearest point, the possibility that area swept is large. Hence, to compensate the extra swept area. the orbital speed has to decrease at the largest point.
Hence, planet's speed is greater when it is closer to sun than the speed when it is farther.
Answer:
Its goal is to explore the Kupier Belt, a region in space where comets originate
Explanation:
The Mid-Infrared Instrument (MIRI) is a telescope with abilities to see the mid-infrared region of the electromagnetic spectrum.The wavelength of this instrument is 5-28 microns. The Kupier belt is a region in space beyond Neptune.MIRI was developed to enable scientists study and explore the kupier belt to observe the far most galaxies, new stars that are formed and the comets invisible from the previous telescopes.
Answer:
NO
Explanation:
The angular position of a diffraction null is given by
Asinθ=m λ=m c/f
Given that A is the slit width,
and m is an integer.
The wavelength of the second null satisfies
λ= A sinθ₁/2
of which if there were distinct third null it will satisfy
sinθ₂=3λ/A= 3* sin 45/2
λ=(3*0.7071)/2
λ=2.121/2
λ=1.060
Of which 1.060 is greater than 1
Potential Energy is calculated through the equation,
PE = m x g x h
where m is the mass, g is the acceleration due to gravity, and h is the height. Since, weight is equal to mass times gravity, PE may also be calculated through the equation,
PE = W x h
Substituting the known values,
PE = (2,200 N) x (15 m)
<em>PE = 33,000 J</em>