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3 years ago

A car enters the freeway with a speed of 6.4m/s and

Physics

1 answer:

Vsevolod [243]3 years ago

5 0

Chicken nuggets , are your answer , eat 20 of them and then start work,

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a waterwheel built in Hamah, Syria, has a radius of 20 m . If the tangential velocity at the wheels edge is 7.85 m/s , what is t

gtnhenbr [62]

Answer:

3.08m/s²

Explanation:

Given parameters:

Radius = 20m

Tangential velocity = 7.85m/s

Unknown:

Centripetal acceleration = ?

Solution:

Centripetal acceleration is the acceleration of a body along a circular path.

it is mathematically given as;

a = $\frac{v^{2} }{r}$

v is the tangential velocity

r is the radius

a = $\frac{7.85^{2} }{20}$ = 3.08m/s²

4 0

3 years ago

Does lightning McQueen have car or life insurance?

shutvik [7]

I am taking an educated guess that he has life insurance

7 0

3 years ago

An 11,000-watt radio station transmits at 880 kHz. Calculate the energy of a single photon at the transmitted frequency.

prisoha [69]

The energy of a single photon at the transmitted frequency is $\bold{5834.4 \times 10^{-31} \mathrm{J}}$

Answer: Option b

Solution:

Energy of photon is given as $E=\frac{h c}{\lambda}$

Where c is the velocity of Light $\left(3 \times 10^{8} m / s\right)$

h is planck's constant $\left(6.63 \times 10^{-34}\right)$

λ is the wavelength of photon

Energy of photon can be rewritten as $E=h \times f$

Where f is the frequency of photon

Frequency of photon is obtained by dividing velocity of light by wavelength of photon.

$f=\frac{c}{\lambda}$

$E=6.63 \times 10^{-34} \times 880 \times 10^{3}=5834.4 \times 10^{-31} \mathrm{J}$

8 0

3 years ago

An elevator traveled 15 floors (150 ft) at a speed of 4.5 m/s. What additional information is needed to determine the velocity o

vladimir2022 [97]

Answer:

Velocity is vector quantity.So it needs direction in addition to speed.

Explanation:

The velocity of an object is the rate of change of its position with respect to a frame of reference, and is a function of time. Velocity is equivalent to a specification of its speed and direction of motion.

4 0

3 years ago

A color that is almost gray has a ________ saturation.

Mama L [17]

When we see a solid color that is red, blue, or black let's say, it is said to have a high saturation of color. A color that is almost gray has very little or very saturation. Of course, the amount of gray can vary greatly but for the most part a color that is almost gray has little or no saturation at all.

3 0

3 years ago