The equation for momentum is p=mv. Which letter represents the momentum? Question 2 options: p m v

Plz do it all plz will give you a brainlest,thanks,5 stars to best answer

Arte-miy333 [17]

Answer:

B I think

Explanation:

3 0

3 years ago

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A 13 cm long tendon was found to stretch 3.7 mm by a force of 12.1 N . The tendon was approximately round with an average diamet

liq [111]

Answer:

young's modulus $=\frac{stress}{strain}=\frac{0.1990\times 10^{6}}{28.46\times 10^{-3}}=6.99\times 10^6N/m^2$

Explanation:

We have given length of tendon L= 13 cm =0.13 m

Change in length $\Delta L=3.7mm=3.7\times 10^{-3}m$

Force = 12.1 N

Average diameter d =8.8 mm

So $r=\frac{d}{2}=\frac{8.8}{2}=4.4mm=4.4\times 10^{-3}m$

Area $A=\pi\times (4.4\times 10^{-3})^2=60.79\times 10^{-6}m^2$

Now stress $=\frac{force}{area}=\frac{12.1}{60.79\times 10^{-6}}=0.1990\times 10^6N/m^2$

Strain $=\frac{change\ in\ lenght}{length}=\frac{3.7\times 10^{-3}}{0.13}=28.46\times 10^{-3}$

Now young's modulus $=\frac{stress}{strain}=\frac{0.1990\times 10^{6}}{28.46\times 10^{-3}}=6.99\times 10^6N/m^2$

8 0

4 years ago

Consider two planets in space that gravitationally attract each other. if the masses of both planets are doubled, and the distan

amid [387]

Yhuihoifjhh <span>F = Gm1m2 / r^2

if the masses are doubled then the force is increased by a factor of 4

if the distance is doubled the force is decreased by a factor of 1/ 2^2
the net result is no change in force</span>

6 0

3 years ago

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While standing at the edge of the roof of a building, a man throws a stone upward with an initial speed of 6.63 m/s. The stone s

gogolik [260]

Answer:

Speed=28.1m/s(to 3s.f.) , Time=2.19s(to 3s.f.)

Explanation:

Time=Distance/Speed

=14.5/6.63

=2.19s(to 3s.f.)

Acceleration=Final Velocity(v)-Initial Velocity(u)/Time

9.81=v-6.63/2.19

v-6.63=21.5

v=28.1m/s

3 0

3 years ago

An ac series circuit contains a 20 ohm resistor, a capacitor of 0.75 micro farad, and an inductor of 120 mH. What frequency shou

Blababa [14]

Answer:

530.5 Hz

Explanation:

Given :

C=0.75 micro

L=120 mH

Reactance capacitor can be determined by

= $\frac{1}{ wC}$

where c =capacitor

= $\frac{1}{w*0.75*10^-6}$

Reactance inductor can be determined by

$= w*L\\ = w*120*10^-3$

As they are in series so ,

$\frac{1}{w*0.75*10^-6} =w*120*10^-3$

On solving these value we get

$w=3333.33$

As we know that

f = $\frac{w}{2*3.14}$ =

530.5 Hz

5 0

3 years ago