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3 years ago

While traveling along a highway a driver slows from 24 m/s to 15 m/s in 12 seconds. What is the automobile’s acceleration?

1 answer:

6 0

Average Acceleration = (change in speed) / (time for the change)

Change in speed = (ending speed) - (starting speed)

= 15 m/s - 24 m/s = -9 m/s

Acceleration = (-9 m/s) / (12 sec) = - 0.75 m/s² .

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Consider an oil droplet of mass m and charge q. We want to determine the charge on the droplet in a Millikan-type experiment. We

Katen [24]

Answer:

$q=\frac{mg}{E_o}$

Explanation:

Given:

Charge = <em>q</em>

Electric field strength = $E_o$

weight of the droplet = <em>mg</em>

The charge is suspended motionless. This is because the electric force on the charge is balanced by the weight of the droplet.

electric force on charged droplet, $F=qE_o$

This is balanced by the weight, $mg$

Equating the two:

$qE_o=mg\\\Rightarrow q=\frac{mg}{E_o}$

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3 years ago

PLEASE HELP ASAP!!

kolezko [41]

A. Wedge

and

B.Screw

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and a wedge looks kind of looks like this / and is inclined.

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3 years ago

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Rudik [331]

The answer is letter b

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3 years ago

a 10 kilogram steel ball is dropped from the top of a tower 100 meters high the kinetic energy of the ball just before it sttike

EleoNora [17]

Explanation:

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Therefore our Kinetic energy = mgh = (10kg)(9.81N/kg)(100m) = 9,810J.

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Chemical properties of an acid include...

Cerrena [4.2K]

and C. corrosive, increases the concentration of hydrogen ions when added to water, forms hydrogen gas when it comes in contact with a metal, and formssalt and water when added to a base.

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3 years ago