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1 year ago

A swimmer swims at 5 m/s. How long would it take to swim 5 laps of a 50m pool?

Physics

1 answer:

Gre4nikov [31]1 year ago

3 0

About 5 hours gooood luck

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If you are given three different capacitors, how many different combinations of capacitance can you produce, using all capacitor

MrRa [10]

Answer:

Explanation:

Let there are three capacitances, C1, C2, and C3.

Combination I:

All the three are connected in series combination.

Combination II:

All the three are connected in parallel combination.

Combination III:

C1, C2 are in parallel and then C3 in series.

Combination IV:

C1, C3 are in parallel and then C2 in series.

Combination V:

C3, C2 are in parallel and then C1 in series.

6 0

3 years ago

A 1200 kg car traveling east at 4.5 m/s crashes into the side of a 2100 kg truck that is not moving. During the collision, the v

Rasek [7]

Answer:

Explanation:

This is a simple Law of Momentum Conservation problem of the inelastic type. The equation for this is

$[m_1v_1+m_2v_2]_b=[(m_1+m_2)v]_a$ Filling in:

$[1200(4.5)+2100(0)]=[(1200+2100)v]$ which simplifies to

5400 + 0 = 3300v

so v = 1.6 m/s to the east, choice B

6 0

2 years ago

lasers 1 and 2 emit light of the same color, and the electric field in the beam of laser 1 is twice as strong as the e-field of

bonufazy [111]

Answer:

The intensity of laser 2 is 4 times of the intensity of laser 1.

Explanation:

The intensity in terms of electric field is given by :

$U=\dfrac{1}{2}\epsilon_o E^2$

E is electric field

It means, $U\propto E^2$

In this problem, lasers 1 and 2 emit light of the same color, and the electric field in the beam of laser 1 is twice as strong as the e-field of laser 2.

Let E is electric field in the beam of laser 1 and E' is the electric field in the beam of laser 2. So,

$\dfrac{U}{U'}=(\dfrac{E}{E'})^2$

We have,

E'=2E

So,

$\dfrac{U}{U'}=\dfrac{E^2}{(2E)^2}\\\\\dfrac{U}{U'}=\dfrac{E^2}{4E^2}\\\\\dfrac{U}{U'}=\dfrac{1}{4}\\\\U'=4\times U$

So, the intensity of laser 2 is 4 times of the intensity of laser 1.

6 0

3 years ago

What is the y axis on a graph?

viktelen [127]

^^^^^^^^^^^^^^^^^^^^^^^^^^^ is correct

5 0

2 years ago

The main difference between a chest and a bounce pass is what?

snow_lady [41]

Answer: The main difference between the three is the mode of transmission. The chest pass is straight through the air towards your teammate. While the bounce pass is directed toward the ground and then at your teammate. Finally, the overhead pass is projected high in the air to avoid defenders.

Explanation:

4 0

2 years ago

Read 2 more answers

A swimmer swims at 5 m/s. How long would it take to swim 5 laps of a 50m pool?​

A swimmer swims at 5 m/s. How long would it take to swim 5 laps of a 50m pool?