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3 years ago

A baseball pitcher throws a ball across home plate. The ball travels 13.40m in 0.357s Determine the

Physics

1 answer:

Tanya [424]3 years ago

4 0

Answer: I'm not sure what it needs to be rounded to, but I got 37.53501401 m/s

Explanation: The formula for speed is speed = distance/time. You plug in the distance (13.40) and the time (0.357), then divide 13.40 by 0.357

I hope this helps! :)

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Heat is distributed through the atmosphere by winds True False

amm1812

Answer:

True!

Explanation:

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If you are driving 100 km/h along a straight road and you look to the side for 1.6 s , how far do you travel during this inatten

denis23 [38]

Answer:

The distance traveled is 44.45 m

Solution:

As per the question:

Average speed, $\bar{v} = 100\ km/h$

Time, t = 1.6 s

Now, convert the average speed into m/s:

1 km = 1000 m

1 h = $60\times 60 = 3600\ s$

To calculate the distance traveled:

Now,

$100\ km/h = \frac{100\times 1000}{3600} = 27.78\ m/s$

We know that:

Speed, $\bar{v} = \frac{distance,\ d}{time,\ t}$

Thus

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3 years ago

What is the strength of electric field EpEp 0.60 mmmm from a proton? Express your answer to two significant figures and include

disa [49]

Answer:

3.99*10^-3N/C

Explanation:

Using

Ep= kq/r²

Where r = 0.6mm = 0.6*10^-3m

K= 8.9*10^9 and q= 1.6*10^-19

So = 8.9*10^9 * 1.6*10^-19/0.6*10^-3)²

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3 years ago

A skater of mass 40 kg is carrying a box of mass 5 kg. The skater has a speed of 5 m/s with respect to the floor and is gliding

Yuki888 [10]

For the part a) we need only the momentum of the box and we have the data to find it.

Momentum is given by,

$p=mv$

where clearly, p is the momentum, m the mass of the box and v is the velocity.

Substituting,

$p=(5kg)(5m/s)\\p=25kg.m/s$

For part b) we need an analysis of the situation. We understand that the box on a surface that has no friction will continue to rotate at the same speed previously defined. The box can only stop with friction, so,

$p=(5kg)(5m/s)\\p=25kg.m/s$

It is the same that part a)

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3 years ago