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4 years ago

What is the direction of the tangential speed when a car is driving around a circular curve?

2 answers:

8 0

You're not going to believe this coincidence:. The "tangential" speed is the speed in the direction of the "tangent" to the circle. That's straight ahead, in the direction the car is moving. Since the car is driving in a circle, the tangential direction keeps changing.

Neporo4naja [7]4 years ago

3 0

straight ahead, in the direction the car is moving

Explanation:

when an object is moving around a circular curve, the tangential speed of the object has a direction which is tangent to the curve: therefore, it must go straight ahead, in the direction the car is moving.

On the contrary, the centripetal acceleration of the object (which keeps the object in circular motion) has a direction which is toward the center of the curve.

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The law of conversation of energy states that energy cannot be created or

irinina [24]

Answer:

It says energy can't be created or destroyed

Explanation:

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3 years ago

A 545-kg satellite is in a circular orbit about Earth at a height above Earth equal to Earth's mean radius. (a) Find the satelli

Art [367]

Answer

given,

mass of satellite = 545 Kg

R = 6.4 x 10⁶ m

H = 2 x 6.4 x 10⁶ m

Mass of earth = 5.972 x 10²⁴ Kg

height above earth is equal to earth's mean radius

a) satellite's orbital velocity

centripetal force acting on satellite = $\dfrac{mv^2}{r}$

gravitational force = $\dfrac{GMm}{r^2}$

equating both the above equation

$\dfrac{mv^2}{r} = \dfrac{GMm}{r^2}$

$v = \sqrt{\dfrac{GM}{r}}$

$v = \sqrt{\dfrac{6.67 \times 10^{-11}\times 5.972 \times 10^{24}}{2 \times 6.4 \times 10^6}}$

v = 5578.5 m/s

b) $T= \dfrac{2\pi\ r}{v}$

$T= \dfrac{2\pi\times 2\times 6.4 \times 10^6}{5578.5}$

T = 14416.92 s

$T = \dfrac{14416.92}{3600}\ hr$

T = 4 hr

c) gravitational force acting

$F = \dfrac{GMm}{r^2}$

$F = \dfrac{6.67 \times 10^{-11}\times 545 \times 5.972 \times 10^{24} }{(6.46 \times 10^6)^2}$

F = 5202 N

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3 years ago

Most of the elements (85%) in the periodic table are.

Rasek [7]

Most of the elements are metals

4 0

3 years ago

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Which force prevents protons from repelling each other inside a nucleus?

Stella [2.4K]

Answer:

So, the correct answer is the strong nuclear force. It actually pulls together nuetrons and protons that are in the nucleus. At very tiny distances only, like those inside the nucleus, so, this strong force succeded in dealing with the electromagnetic force, and it basically stops the electrical repulsion of protons from blowing apart the nucleus.

Mark as brainlies please, I need a few more :D

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4 years ago

Light is traveling through the different media shown. In which medium does light travel fastest?

bija089 [108]

Light travelling in a vacuum is the fastest thing in the universe. The speed would be 2.99x10^8 m/s. The answer to this question is 'vacuum', where light can travel the fastest. I hope this helps you. You're welcome!

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4 years ago

Read 2 more answers