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3 years ago

12

You're driving at 50 mph and then speed up to 70 mph. how much more "force" does the engine in your car have to produce to maint

ain the new speed (as compared to the force at 50 mph)? explain.

1 answer:

Fittoniya [83]3 years ago

6 0

You drove 20 more mph than what you did before. The more force is 20 because you drove 20 more mph.

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A wave has a wavelength of 10 mm and a frequency of 14 hertz. What is its speed?

Katena32 [7]

0.14 meters per second .

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3 years ago

If an object is propelled upward from a height of 128 feet at an initial velocity of 112 feet per second, then its height h aft

Marina CMI [18]

Explanation:

The equation of motion of an object is given by :

$h(t)=-16t^2+112t+128$

Where

t is the time in seconds

We need to find the time when the object hits the ground. When the object hits the ground, h(t) = 0

So,

$-16t^2+112t+128=0$

$-t^2+7t+8=0$

On solving above equation using online calculator, t = 8 seconds. So, the object hit the ground after 8 seconds. Hence, this is the required solution.

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3 years ago

You drop an object from a second floor window. Describe the speed of the object after 1 second

Goshia [24]

Objects will accelerate more by 10 (m/s)2

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3 years ago

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A comparison of a machine’s work output with its work input is called __??__.

Aloiza [94]

Ohhhhh its called a input machine

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3 years ago

An atom of arsenic has how many electron-containing orbitals

irina [24]

Answer:

The Arsenic has three electron-containing orbitals. The orbitals s, p and d.

Explanation:

Arsenic is an element with an atomic number equal of 33, it means that it has 33 electrons in its orbitals in the following way:

$1s^{2}$

$2s^{2}$

$2p^{6}$

$3s^{2}$

$3p^{6}$

$3d^{10}$

$4s^{2}$

$4p^{3}$

Therefore, the Arsenic has three electron-containing orbitals (s, p d).

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3 years ago