5211.6 Car can fit in a football field.
The recommended dimensions of a football pitch are 105m x 68m, which is 7,140 sq meters.
The average length of a car is around 14.7 feet.
i.e. 1.37 sq meters
By dividing the football pitch by length of car,
= 7140/ 1.37
= 5211.6 Car
With no gaps of course.
Therefore,
In a football field 5211.6 cars can be fit without no gap.
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B.Power is the force of work over a certain distance.
C.Power is the rate at which work is accomplished.
D.Power is the energy supplied in a force.
B. 19.6 m
C. 1.8 m
D. 3.96 m
Answer: The ball will land at 19.6 m
Explanation:
To calculate the horizontal range of the ball, we use the formula:
where,
v = velocity of the ball = 14 m/s
= angle at which the ball is thrown = 51°
g = acceleration due to gravity =
Putting values in above equation, we get:
Hence, the ball will land at 19.6 m
Answer:
Overload current, short-circuit current and short circuit
Explanation:
Overload current is an excessive current relative to normal operating current, but one that is confined to the normal conductive path provided by the conductors, circuit components, and loads of the distribution system.
A short-circuit current is a current that flows outside the normal conducting path.
One generally accepted definition of short circuit is when a phase or ungrounded conductor comes in contact with, or arcing current flows between, another phase conductor, neutral, or ground.
Answer: Net Force is 15 N towards Martha
Its an unbalanced force
Explanation:
Answer: B)
A hollow double concave lens acts as a diverging lens. When it is filled with a medium of higher refractive index than the surrounding, its diverging power increases.
So if the lens is:
A) Filled with air (n=1) and immersed in water (n=1.33) - Incorrect, air has lower refractive index than water
B) Filled with water (n=1.33) and immersed in CS2 (n=1.6) - Correct, water has lower refractive index than CS2
C) Filled with air (n=1) and immersed in CS2 (n=1.6) - Incorrect, air has lower refractive index than CS2
D) Filled with CS2 (n=1.6) and immersed in water (n=1.33) - Incorrect, CS2 has higher refractive index than water
Therefore, the lens will act as a diverging lens when filled with water and immersed in CS2, which is option B.
The key is that the material inside the lens must have a lower refractive index than the surrounding medium to increase the diverging power of the concave lens.
Explanation: