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In-s [12.5K]
2 years ago
12

A plane flies from basecamp the Lake A, 280 km away in a direction of 20° north of

Physics
1 answer:
klasskru [66]2 years ago
5 0

Answer:

308657

Explanation:

hdoeokeosksjdhdiopejjdhfnfndjdieej i doont know pl

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Which of the following is an example of an electromagnetic wave ?
Alex

Answer:

Its a wave

Explanation:

THis is one

3 0
3 years ago
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A car is pushed with a force of 450 N for 19.4 seconds. What impulse was applied to the car?​
harina [27]

Answer:

impulse = 8820 kg·\frac{m}{s} or 8820 N·s

Explanation:

Impulse J is equal to the average force F_{av} multiplied by the elapsed time Δt or in equation form, J = F_{av}Δt

As long as your force of 450 N is constant then that value is your average force F_{av} and your elapsed time is 19.4 seconds.

Multiply these values.

You will get an impulse of 8820 kg·\frac{m}{s} or 8820 N·s.

6 0
2 years ago
A railroad car of mass 2.50 3 104 kg is moving with a speed of 4.00 m/s. It collides and couples with three other coupled railro
ipn [44]

Answer:2.5 m/s

37.5KJ

Explanation:

Let u_1, u_2 , v_f be the initial velocity of rail road car ,coupled cars & Final velocity of system respectively.

m=2.50\times 10^{4}

Conserving momentum

mu_1+3mu_2=4mv_f

4m+6m=4mv_f

v_f=2.5 m/s

Therefore Final velocity of system is 2.5m/s

(b)Mechanical Energy lost =Initial Kinetic Energy -Final Kinetic Energy

Initial Kinetic Energy=\frac{1}{2}m\left ( 4^2\right )+\frac{1}{2}m\left ( 2^2\right )=14m J

Final Kinetic Energy=\frac{1}{2}4m\left ( 2.5^2\right )=12.5m J

Mechanical Energy lost=14m-12.5m=3.75\times 10^4=37.5 KJ

4 0
3 years ago
What does physical education mean​
lilavasa [31]
Physical education is when you are taught about your body and the physical things you can do to keep it healthy. You are taught how to do exercises to keep healthy and what foods you should eat. Physical education means to be educated about your physical abilities and health.
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3 years ago
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How is a compound different than a mixture?
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The answer is: A compound can be separated by physical means.
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