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3 years ago

Inertia is responsible for :

Physics

2 answers:

DENIUS [597]3 years ago

8 0

B. the reason we must wear seat belts

Arisa [49]3 years ago

8 0

B) we need seat belts to keep us in the car just in case a car breaks suddenly or hits another.

Remember— an object in motion will remain in motion until acted on be another outside force acts upon it
In this case the seat belt is the outside force.

An object will remain at rest until an outside force acts upon it.

Hope this helps!

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An accelerating voltage of 2.47 x 10^3 V is applied to an electron gun, producing a beam of electrons originally traveling horiz

Dmitry [639]

Answer:

6.3445×10⁻¹⁶ m

Explanation:

E = Accelerating voltage = 2.47×10³ V

m = Mass of electron

Distance electron travels = 33.5 cm = 0.335 cm

$E=\frac{mv^2}{2}\\\Rightarrow v=\sqrt{\frac{2E}{m}}\\\Rightarrow v=\sqrt{\frac{2\times 2470\times 1.6\times 10^{-19}}{9.11\times 10^{-31}}}\\\Rightarrow v=29455356.08671\ m/s$

Deflection by Earth's Gravity

$\Delta =\frac {gt^2}{2}$

Now, Time = Distance/Velocity

$\Delta =\frac {g\frac{s^2}{v^2}}{2}\\\Rightarrow \Delta =\frac{9.81\frac{0.335^2}{29455356.08671^2}}{2}\\\Rightarrow \Delta =6.3445\times 10^{-16}\ m$

∴ Magnitude of the deflection on the screen caused by the Earth's gravitational field is 6.3445×10⁻¹⁶ m

3 0

3 years ago

What is the weight of an object a mass of 90.0kg?

Natasha2012 [34]

Explanation:

it would be 198.4

you're welcoms

5 0

3 years ago

PLEASE HELP, THANK YOU!.. :)

Firlakuza [10]

Answer:

First Reaction:

$^{234}U$ => $^{230} Th + ^{4}He$

Second Reaction:

$^{230} Th$ => $^{226} Ra + ^{4}He$

Combined Reaction:

$^{234} U$ => $^{226}Ra + 2( ^{4} He)$

8 0

3 years ago

What happens to the gravitational force between two objects if:

maksim [4K]

Answer:

a gravitational force is double

b gravitational force become 4 time

c gravitational force is reduced by 4

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3 years ago

A body is at aheight of 81m and is ascending upwards with a velocity of 12m/s .a body of 2 kg weight is dropped from it.if g=10m

butalik [34]

First the velocity drops to zero in 1.2 secs. In those seconds it went upwards for 7.2 m, then it went from 87.2 to 0m. x-x0=v0*t+1/2*g*t^2 ergo t=sqrt(2x/g) that is 4.1761 s. Finally the total time required is 5.3761 s

7 0

3 years ago