Answer:
Equal to c ( b )
Explanation:
The speed of the light will be Equal to C because the speed of light regardless of the speed of the Train, length of the car and the medium in which the light travels the speed of light remains the same ,
The speed of light ( c ) is equal to : 299792458 m / s and no object can travel faster than light therefore the speed of light from the flashlight will remain the same over the whole time it travels through the medium or distance that it is found.
Answer:
19.1 deg
Explanation:
v = speed of the proton = 8 x 10⁶ m/s
B = magnitude of the magnetic field = 1.72 T
q = magnitude of charge on the proton = 1.6 x 10⁻¹⁹ C
F = magnitude of magnetic force on the proton = 7.20 x 10⁻¹³ N
θ = Angle between proton's velocity and magnetic field
magnitude of magnetic force on the proton is given as
F = q v B Sinθ
7.20 x 10⁻¹³ = (1.6 x 10⁻¹⁹) (8 x 10⁶) (1.72) Sinθ
Sinθ = 0.327
θ = 19.1 deg
<h3>
Answer:</h3>
60 m
<h3>
Explanation:</h3>
<u>Concept Used:</u>
We know that the area under a velocity-time graph represents the Displacement of the body
<u>Displacement in the Last 6 seconds:</u>
To find the Displacement in the last 6 seconds, we will find the area under the graph between x = 4 and x = 10
We can see that the shape formed is a rectangle also shown in the given graph. So, the area of the rectangle is the Displacement of the car in the last 6 seconds
<u>Area of the Rectangle:</u>
From the graph, we know that the rectangle is 10 (m/s) tall and 6 (s) wide
Area of Rectangle= length*Breadth
replacing the values
Area = 10 (m/s) * 6 (s)
Area = 60 m
Hence, the car travelled 60 m in the last 6 seconds of the graph
The type of motion in which a object travels in a straight line, and it’s velocity remains constant alongside that line, as it covers in equal intervals of time & irrespective of the duration of the time.
Answer:53.3m/s
Explanation:
time for first travel
time=distance/speed
time=40/80
time=0.5seconds
time for second travel:
time=distance/speed
time=40/40
time=1seconds
total time=0.5+1
total time=1.5seconds
Then average speed for 80km trip:
Speed=distance/time
Speed=80/1.5
Speed=53.3m/s