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1 year ago

how fast would a(n) 73 kgkg man need to run in order to have the same kinetic energy as an 8.0 gg bullet fired at 430 m/sm/s ?

Physics

1 answer:

Mars2501 [29]1 year ago

8 0

Answer:

an 85 kg person run to equal the kinetic energy of an 8.0 g bullet fired at 410 m/s? The speed is, it might be argued,

v=4.0m/s

Explanation:

Typically, the mathematical formula for kinetic energy is as follows:

KE= $\frac{1}{2} *m*v^{2}$

K.E= kinetic energy

M=mass

V= speed

so,

KE=1/2*0.008*(420)*420

K.E=672.4J

Therefore,

v*v=672.4/85

v*v=15.821

v=4.0m/s

Therefore

v=4.0m/s

What is Kinetic Energy?

The energy an object has as a result of motion is known as kinetic energy in physics. It is described as the effort required to move a mass-determined body from rest to the indicated velocity.

To know more about Kinetic Energy? Visit to: -

brainly.com/question/22174271

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What are aerial plants

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thus an evolutionary process.Aerial roots are often thick and spread around the parent tree. The Banyan tree can have several aerial roots as it gets older.

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4 years ago

Calculate the electric charge of the glass ball

-Dominant- [34]

Answer:

As per Coulomb's law we know that force between two charges is given as

F = \frac{kq_1q_2}{r^2}F=

here we know that

q_1 = 2.5 \times 10^{-6} Cq

=2.5×10

−6

q_2 = -5.0 \times 10^{-6} Cq

=−5.0×10

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r = 0.0050 mr=0.0050m

now from above formula we will have

F = \frac{(9 \times 10^9)(2.5 \times 10^{-6})(5 \times 10^{-6})}{(0.0050)^2}F=

(0.0050)

(9×10

)(2.5×10

−6

)(5×10

−6

)

F = 4500 NF=4500N

so they will attract towards each other as they are opposite in nature with force F = 4500 N

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3 years ago

2. If an em' of Hg weighs 13.6 g, what is the mass of a cylinder of: Sem and height 20 Cm

Yuri [45]

Answer:

Let the mass of mercury m= 13.6 gm and volume be V=1cm3.

Now change in volume when it is heated upto 50oC,

ΔV=VαΔT

ΔV=1×1.82×10−4×50

ΔV=91×10−4cm3

New volume V1=V+ΔV=1.0091cm3

New density ρ=V1m=1.009113.6=13.48gcm−3

Explanation:

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3 years ago

Butter melts when you heat it on a pan on the stove.is this a chemical changes or physical changes?

Stells [14]

Answer:

No chemical bonds are broken or formed in melting butter, so it is not a chemical change. The melting process is only a physical change, the change of state from solid to liquid.

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4 years ago

Read 2 more answers

What is the final volume of a balloon that was initially 500.0 mL at 25°C and was then heated to 50°C?

horsena [70]

Answer:

V₂ =541.94 m L.

Explanation:

Given that

V₁ = 500 mL

T₁ = 25°C = 273 + 25 = 298 K

T₂ = 5°C = 273+50 =323 K

The final volume = V₂

We know that ,the ideal gas equation

If the pressure of the gas is constant ,then we can say that

$\dfrac{V_2}{V_1}=\dfrac{T_2}{T_1}$

Now by putting the values in the above equation we get

$V_2=500\times \dfrac{323}{298}\ mL\\V_2=541.94\ mL$

The final volume of the balloon will be 541.94 m L.

V₂ =541.94 m L.

4 0

3 years ago