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Rzqust [24]
3 years ago
14

An airplanes flies 2220 miles in 3. What is it’s average speed in miles per hour?

Physics
2 answers:
Arisa [49]3 years ago
7 0

Distance = (Rate)(Time), so Time = Distance/Rate

= (2220 miles)/(555 mi/hr) = 4 hours

Aleksandr-060686 [28]3 years ago
5 0
It is traveling at 740 mph
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3. Imagine a 10kg block moving with a speed of 20m/s<br> calculate the kinetic energy of this block
MatroZZZ [7]
The formula of the kinetic energy is:
E_{k}  =  \frac{m v^{2} }{2}
where m is a mass of the object, v is speed of the object at the moment of time. So we have:
E_{k}  =  \frac{10* 20^{2} }{2}  = 2000J
The answer is 2000 Joules.
6 0
3 years ago
Why are you more likely to get a concussion when hit by a field hockey ball than a
Aleksandr-060686 [28]

Answer:

because it can be hard

Explanation:

I said that because they be on bed rest

6 0
3 years ago
A research submarine has a 20-cm-diameter window that is 9.0 cm thick. The manufacturer says the window can withstand forces up
Ratling [72]

Answer:

The maximum safe depth in salt water is 3758.2 m.

Explanation:

Given that,

Diameter = 20 cm

Radius = 10 cm

Thickness = 9.0 cm

Force F = 1.2\times10^{6}\ N

Inside pressure = 1.0 atm

We need to calculate the area

Using formula of area

A=\pi\times r^2

Put the value into the formula

A=\pi\times(10\times10^{-2})^2

A=0.0314\ m^2

We need to calculate the pressure

Using formula of pressure

P=\dfrac{F}{A}

Put the value into the formula

P=\dfrac{1.2\times10^{6}}{0.0314}

P=38216560.50\ Pa

P=3.8\times10^{7}\ Pa

We need to calculate the maximum depth

Using equation of pressure

P=P_{atm}+\rho gh

h=\dfrac{P-P_{atm}}{\rho g}

Put the value into the formula

h=\dfrac{3.8\times10^{7}-101325}{1029\times9.8}

h=3758.2\ m

Hence, The maximum safe depth in salt water is 3758.2 m.

4 0
3 years ago
A pure musical torte causes a thin wooden
victus00 [196]
Hello! Your answer would be D. Interference

This is because interference causes vibration!!!
4 0
3 years ago
Important minerals such as copper are found in what?
adoni [48]
It can be found in granitic and basaltic rock.
3 0
3 years ago
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