3 years ago

Can someone pls help me with this it’s due in a couple of minutes pls I would really appreciate it I will make u brainliest.

Physics

1 answer:

Ilya [14]3 years ago

8 0

Answer:

the two pink/purple in the first box with the green ones and blue and grey in the second box

You might be interested in

HELP!!

raketka [301]

Hello!

Since the two weights are <em>off</em> the table, the block will move towards letter F.

I hope this helps :))

5 0

3 years ago

Read 2 more answers

If the sun in 148 million kilometers from the earth, how many minutes will it take the light from the sun to reach the earth?

Natasha2012 [34]

Answer:

about 8 mins and 20 secs

Explanation:

8 0

3 years ago

How many kj of heat are needed to completely melt 144 g of titanium metal, given that the metal is at its melting point? the hea

Elina [12.6K]

Given, mass of titanium metal = 144 g

Heat of fusion of titanium metal= 18.7 J/g

Heat of fusion is the amount of heat energy needed to change the state of one gram of a substance from solid to liquid or vice-versa.

Thus, 18.7 J of heat is needed to melt one gram of titanium metal.

Therefore, heat needed to melt 144 g of titanium metal = 18.7×144

= 2692.8 J

8 0

3 years ago

Determine the average normal stress developed in rod AB if the load has a mass of 55 kg . The diameter of rod AB is 8 mm.

Fudgin [204]

Answer:

The normal stress is 10.7[MPa]

Explanation:

The normal stress can be calculated with the following equation:

$S_{norm} =\frac{F}{A} \\where:\\F= force [Newtons]\\A=area [m^2]\\S_{norm} = Normal stress [\frac{N}{m^{2} }] or [Pa]$

The area of the rod can be calculated using the equation:

$A=\frac{\pi }{4}*d^{2} \\d=8[mm]=0.008[m]\\A=\frac{\pi }{4}*(0.008)^{2} \\A=5.02*10^{-5} [m^{2} ]$

The force is the result of the mass multiplied by the gravity.

$F=55[kg]*9.81[m/s^{2} ] = 539.6[N]\\\\S_{norm} = 539.6/5.02*10^{-5} \\S_{norm} = 10.7*10^{6}[Pa] = 10.7[MPa]$

3 0

3 years ago

This planet gets its blue-green color because its atmosphere is full of methane gas and hydrogen.

Effectus [21]

The correct is -

Uranus

5 0

3 years ago

Read 2 more answers