3 years ago

Someone help me please

Physics

2 answers:

riadik2000 [5.3K]3 years ago

6 0

the answer is 25 newtons

aleksley [76]3 years ago

5 0

Each time the distance doubles the gravity quarters, then at two earth radii it will weigh 25 Newton’s

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Dry air is primarily composed of nitrogen. In a classroom demonstration, a physics instructor pours 3.6 L of liquid nitrogen int

neonofarm [45]

Answer:

The value is $V_n = 2.2498 \ m^3$

Explanation:

From the question we are told that

The volume of liquid nitrogen is $V_n = 3.6 \ L= 3.6 *10^{-3} \ m^3$

The density of nitrogen at gaseous form is $\rho_n = 1.2929 \ kg/m^3$ = The dry air at sea level

Generally the density of nitrogen at liquid form is

$\rho _l = 808 \ kg/m^3$

And this is mathematically represented as

$\rho_l = \frac{m}{V_l }$

=> $m = \rho_l * V_l$

Now the density of gaseous nitrogen is

$\rho_n = \frac{m}{V_n }$

=> $m = \rho_n * V_n$

Given that the mass is constant

$\rho_n * V_n = \rho_l * V_l$

$1.2929* V_n = 808 * 3.6*10^{-3}$

=> $V_n = 2.2498 \ m^3$

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3 years ago

7. A bicycle accelerates at 2.0 m/s2. If the mass of the bicycle and rider together is

kkurt [141]

Answer:

170 N

Explanation:

Since Force F = ma were m = mass = 85 kg and a = acceleration = 2.0 m/s².

So the net force on the bicycle is

F = ma = 85 kg × 2.0 m/s² = 170 N

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I NEED HELP RIGHT NOW PLEASE I will 30pts and A brainly to anyone who helps me with questions 2-13!!!!!!!

neonofarm [45]

True True False True False False True I hope I helped on the first few

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4 years ago

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