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Alex73 [517]
4 years ago
6

During a high-speed car chase, a gangster's car flies off of a cliff. If it takes 7.15 seconds for the car to reach the ground b

elow, how high is the cliff?
Physics
1 answer:
Ksju [112]4 years ago
7 0

Answer:

255.61 m

Explanation:

Use s=ut +\frac{1}{2} at^{2} in downwards direction from the moment of flight till the car hits the bottom.

As the car fly off the cliff the velocity of the car in vertical direction will be zero.

h =\frac{1}{2} 10(7.15)^{2}

h=255.61 m

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A 4.88 x 10-6 C charge moves 265 m/s
Alex73 [517]

Answer:

F=0N

Explanation:

From the question we are told that:

Charge Q=4.88 x 10-6 C

Velocity v= 265m/s

Angle \theta =0 \textdegree

Magnetic field B=0.0579T

Generally the equation for Force is mathematically given by

 F=Q(\=v*\=B)

 F=qvBsin\theta

Therefore

 F=qvBsin0 \textdegree

 F=0N

5 0
3 years ago
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What is an electric motor? Explain its operation. 2-3 sentence
Anarel [89]

Answer:

An electric motor is a device that changes electrical energy into mechanical energy. This change occurs due to the interaction between the magnetic field of magnets and the magnetic field due to the  electric current in the  loop. The interaction between the two produces a torque that makes the loop rotate on a shaft.

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3 years ago
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Calculate the Work done if the force is 2000 Newtons<br> and the distance is 5 km.
kodGreya [7K]

Answer:

10 million joules or 10,000 KJ

Explanation:

Work= Force x Displacement

convert 5km into meters -5km=5000m

W= 2000N x 5000m

w=10,000,000 Joules

or 10,000KJ

4 0
2 years ago
A piece of metal has a weight of 6.5 N when it is in air and 3.0 N when it is submerged into water. What is the buoyant force on
Kamila [148]

Answer:

The buoyant force on the piece of iron is 3.5 newtons.

Explanation:

According to the Archimedes' Principle, the piece of metal experiments a buoyant force equal to the weight of the displaced fluid. By Newton's Laws, we have the following formula:

F_{B} - W_{P}+W_{F} = 0 (1)

Where:

F_{B} - Buoyant force on the piece of iron, in newtons.

W_{P} - Weight of the piece of metal, in newtons.

W_{F} - Weight of the fluid displaced by the piece of metal, in newtons.

F_{B} = W_{P}-W_{F}

If we know that W_{P} = 6.5\,N and W_{F} = 3\,N, then the buoyant force on the piece of iron is:

F_{B} = 6.5\,N - 3\,N

F_{B} = 3.5\,N

The buoyant force on the piece of iron is 3.5 newtons.

7 0
3 years ago
A sinusoidal voltage Δv = (100 V) sin (170t) is applied to a series RLC circuit with L = 40 mH, C = 130 μF, and R = 50 Ω.
mixer [17]

Answer:

See attached file

Explanation:

5 0
3 years ago
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