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2 years ago

PLS GIVE RIGHT ANSWER I GIVE UP YOU WILL GET 100 PTS or MORE

Physics

1 answer:

Maurinko [17]2 years ago

7 0

Answer:

it is in explanation part

Explanation:

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You drive 4 km at 30 km/h and then another 4 km at 50 km/h. What is your average speed for the whole 8-km trip?

Setler79 [48]

Answer:

option A

Explanation:

given,

drive 4 km at 30 km/h and

another 4 km at 50 km/h

average speed for the whole 8 Km trip = ?

time for the trip of first 4 km

distance = speed x time

$t_1 = \dfrac{d}{s}$

$t_1 = \dfrac{4}{30}$

t₁= 0.1333 hr

time from another 4 km trip

$t_2 = \dfrac{d}{s}$

$t_2= \dfrac{4}{50}$

t₂ = 0.08 hr

average speed

$s= \dfrac{d}{t}$

$s= \dfrac{8}{0.1333 + 0.08}$

$s= \dfrac{8}{0.2133}$

s = 37.50 Km/hr

Less than 40 Km/h

the correct answer is option A

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3 years ago

A constant force of 5.00 N acts on a 2.50 kg object for 10.0 s. What are the changes in the object’s momentum and velocity?

dimulka [17.4K]

Hope this answer helps, cause Idk, I might be wrong, but I still, I used the correct formulas, so I might be correct

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3 years ago

What is total revenue in economics

dsp73

Answer:

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Explanation:

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3 years ago

It which medium would light have the longest wavelength

Shtirlitz [24]

Visible light waves are the only electromagnetic waves we can see has the longest wavelength

4 0

4 years ago

Read 2 more answers

Two long parallel wires carry currents of 20 A and 5.0 A in opposite directions. The wires are separated by 0.20 m. What is the

zzz [600]

The magnetic field midway between the two wires is $5.0*10^{-7} T$ .

It is given that Two long parallel wires carry currents of 20 A and 5.0 A in opposite directions. The wires are separated by 0.20 m.

We need to determine the magnetic field midway between the two wires.

A magnetic field is a vector field that describes the magnetic influence on moving electric charges, electric currents, and magnetic materials.

A moving charge in a magnetic field experiences a force perpendicular to its own velocity and to the magnetic field.

Magnetic field is a place in space near a magnet or an electric current where a physical field is created from a moving electric charge that creates force on another moving electric charge.

B=B1+B2

= $\frac{4\pi *10^{-7}*20 }{2\pi R1} +\frac{4\pi *10^{-7}*5 }{2\pi R2}$

= $\frac{4\pi *10^{-7}*20 }{2\pi *0.10} +\frac{4\pi *10^{-7}*5 }{2\pi *0.10}$

= $5.0*10^{-7} T$

Hence, the magnetic field midway between the two wires is $5.0*10^{-7} T$

Learn more about magnetic field click here, brainly.com/question/14848188

#SPJ4

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2 years ago