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s2008m [1.1K]
3 years ago
6

HELP PLEASE FOR BRAINLIEST!

Physics
2 answers:
anastassius [24]3 years ago
8 0

Answer:

Density = Mass/Volume => Volume = Mass/Density = 12/3.1 = 3.87ml

Explanation:

rosijanka [135]3 years ago
4 0

Answer:

3.9 mL

Explanation:

To find the volume of an object using its mass and density, we can use the following formula:

Volume = Mass/Density

Volume = 12/3.1

Volume ≈ 3.9

Therefore, the volume of the object is 3.9 mL.

I hope this helps!

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Two resistors R1 = 3 Ω and R2 = 6 Ω are connected in parallel. What is the net resistance in the circuit?​
gtnhenbr [62]

Answer:

"2Ω" is the net resistance in the circuit.

Explanation:

The given resistors are:

R1 = 3Ω

R2 = 6Ω

The net resistance will be:

⇒  \frac{1}{R_{net}} =\frac{1}{R_1} +\frac{1}{R_2}

On substituting the values, we get

⇒  \frac{1}{R_{net}} =\frac{1}{3} +\frac{1}{6}

On taking L.C.M, we get

⇒  \frac{1}{R_{net}} =\frac{2+1}{6}

⇒  \frac{1}{R_{net}} =\frac{3}{6}

⇒  \frac{1}{R_{net}} =\frac{1}{2}

On applying cross-multiplication, we get

⇒ R_{net}=2 \Omega

3 0
3 years ago
A car enters a level, unbanked semi-circular hairpin turn of 100 m radius at a speed of 28 m/s. The coefficient of friction betw
meriva

Answer:

As  28m/s = 28m/s

Explanation:

r = the radius of the curve

m =  the mass of the car

μ = the coefficient of kinetic friction

N = normal reaction

When rounding the curve, the centripetal acceleration is

a = \frac{v^{2}}{r}

therefore

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

v = \sqrt{\mu rg}

\mu = \sqrt{0.8 \times 100\times9.8} \\\\= 28m/s

As  28m/s = 28m/s

8 0
3 years ago
A horizontal force of 675 N is needed to overcome the force of static friction between a level floor and a 300-kg crate. What is
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Explanation:

Below is an attachment containing the solution.

8 0
3 years ago
A light-year is a unit of a. time. c. mass. b. distance. d. density. please select the best answer from the choices provided a b
11111nata11111 [884]

Answer:

distance

Explanation:

it is the distance traveled by light in one year

3 0
2 years ago
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Ruthford's theory was identified by
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Answer:

your mom

Explanation:

6 0
3 years ago
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