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a_sh-v [17]
3 years ago
15

AYOO Hey plzzzzzzzzzzzzzzzzzzzzzzz

Physics
1 answer:
blagie [28]3 years ago
4 0

Answer:

Hold on Ill answer it..When do u need it by

Explanation:

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A 1000-kg car is slowly picking up speed as it goes around a horizontal curve whose radius is 100 m. The coefficient of static f
Snezhnost [94]

Answer:

18.5 m/s

Explanation:

On a horizontal curve, the frictional force provides the centripetal force that keeps the car in circular motion:

\mu mg = m\frac{v^2}{r}

where

\mu is the coefficient of static friction between the tires and the road

m is the mass of the car

g is the gravitational acceleration

v is the speed of the car

r is the radius of the curve

Re-arranging the equation,

v=\sqrt{\mu gr}

And by substituting the data of the problem, we find the speed at which the car begins to skid:

v=\sqrt{(0.350)(9.8 m/s^2)(100 m)}=18.5 m/s

7 0
4 years ago
Read 2 more answers
What does force equal? mass times velocity (f = mv) distance divided by time (f = d / t) mass times acceleration (f = ma)
Mama L [17]
A force can cause an object with mass to change its velocity

The formula F = m x a.
Force = mass multiplied by acceleration.


The definition of a Newton,
the standard unit of force, is
Newton = kg × m/s^2.

(m/s = meters per second squared)
5 0
3 years ago
3. A snowmobile has a mass of 2.25 x 102 kg. A constant force is exerted on it for 50.0 s. The snowmobile’s initial velocity is
Art [367]

Answer:

a. m(v-u)

momentum =5175kgm/s

b. 103.5N

3 0
3 years ago
An LED is useful because when a current passes through it, it gives out... what?
Mkey [24]

An LED is useful because when a current passes through it, it gives out light.

4 0
3 years ago
HELP QUICK <br> numbers 2-6
Sindrei [870]

Answer:

2. B

3. A

4. C

5. B

6. A

Explanation:

2. Sound waves use vibrating molecules to move. With this being said, sound waves would travel best through dense materials, and would travel worst in empty materials, like space. Using this information, you can infer that B would be the answer because water is denser than air and water is the densest material on that list.

3. The speed of the wave is equal to the frequency times the wavelength. Since it has a wavelength of 100 meter and 20 Hertz, the speed would 2000 m/s

4. Like noted in question 2, sound waves travel best in dense materials. Rock is the densest material in that last.

5. By looking at the chart, you can see that the speed increases by 4 m/s when the temperature increases by 10. Using simple division, you could determine that the speed would go up by 2 m/s since the jump between 15 degrees and 20 degrees is 5, which is half of 10, making the speed half of 4.

6. The speed would decrease because, like stated above, sound travels best through dense materials. Since rock is denser than air, the speed would decrease as it leaves.

5 0
3 years ago
Read 2 more answers
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