Answer:
Option c) A massive collapsed star
Explanation:
A black hole forms as a result of the collapse of the center of a massive star into itself. This process is known as supernova.
The gravitational pull of the black hole is enormously strong enough that nothing can escape it not even any electromagnetic radiations or light and absorbs everything that tries to cross it as a result of enormously massive star into a very tiny or small space.
Answer:
Laurens suv have been travelling 60km/h speed if she can covers the distance of 10 kilometers in 5 minutes.
Explanation:
As per the given question,
Distance = 10 km
Time = 5 minutes
Convert minutes into hour.
There are 60 minutes in one hour, hence 5 minutes in hours is written as
We know the relationship between distance, speed and time is as follows,
Speed = 120km/h
Laurens suv exceeds the limit by = 120 – 60
Thus the speed limit exceeds by 60km/h
.
Answer:
2917.4 m/s
Explanation:
From the question given above, the following data were:
Gravitational acceleration of the Moon (g) = 0.25 times the gravitational acceleration of the earth
Radius (r) of the Moon = 1737 Km
Escape velocity (v) =?
Next, we shall determine the gravitational acceleration of the Moon. This can be obtained as follow:
Gravitational acceleration of the earth = 9.8 m/s²
Gravitational acceleration of the Moon (g) = 0.25 times the gravitational acceleration of the earth
= 0.25 × 9.8 = 2.45 m/s²
Next, we shall convert 1737 Km to metres (m). This can be obtained as follow:
1 Km = 1000 m
Therefore,
1737 Km = 1737 Km × 1000 m / 1 Km
1737 Km = 1737000 m
Thus, 1737 Km is equivalent to 1737000 m
Finally, we shall determine the escape velocity of the rocket as shown below:
Gravitational acceleration of the Moon (g) = 2.45 m/s²
Radius (r) of the moon = 1737000 m
Escape velocity (v) =?
v = √2gr
v = √(2 × 2.45 × 1737000)
v = √8511300
v = 2917.4 m/s
Thus, the escape velocity is 2917.4 m/s
Answer:
The cause of a magnetic force are small electrical currents or moving charges: Tiny circular currents at the atomic level are responsible in a permanent magnet for it to exert a magnetic force.
Explanation:
