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Harman [31]
3 years ago
7

What is the difference between physical & chemical changes?

Physics
1 answer:
Kazeer [188]3 years ago
5 0

boiling point Gatoride

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Why do we get headaches?
user100 [1]
Being hot or not drinking enough fluids.
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4 years ago
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which describes the attraction or repulsion caused by magnets? a. magnetic domain b. magnetic force c. magnetic field
viva [34]
B. Magnetic force-attraction or repulsion that arises between electrically charged particles because of their motion. It is the basic force responsible for such effects as the action of electric motors and the attraction of magnets for iron. Electric forces exist among stationary electric charges; both electric and magnetic forces exist among moving electric charges. The magnetic force between two moving charges may be described as the effect exerted upon either charge by a magnetic field created by the other.
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A car travels at a constant rate for 100 miles going due west for one hour. Then it travels at a constant rate for another 75 mi
nirvana33 [79]

Answer:

C. 100 mph west

Explanation:

Average velocity is total displacement over total time.  During the first hour, the average velocity is:

v_avg = 100 mi / 1 hr

v_avg = 100 mph west

Since the velocity is constant, the instantaneous velocity at any time equals the average velocity.

v = v_avg

v = 100 mph west

7 0
4 years ago
how many miles can you get on one tank of gas if your tank holds 18 gallons and you get 23 miles per gallon?
andrezito [222]
(18 gallon/tank) x (23 mile/gallon)  = <em>414 mile/tank</em> 
6 0
3 years ago
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If a car moves with a uniform speed of 2m/s in a circle of radius 0.4m, what is its angular speed?
REY [17]

Answer:

The car's angular speed is \frac{rad}{s}.

Explanation:

Angular velocity is usually measured with \frac{radians}{sec}, so I'm going to use that to answer your question.

The relationship between tangential velocity and angular velocity (ω)  is given by:

V = \omega R

Using the values from the question, we get:

2 \frac{m}{s} = \omega (0.4m)

\omega = 5 \frac{rad}{s}

Therefore, the car's angular speed is 5 \frac{rad}{s}.

Hope this helped!

3 0
3 years ago
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