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zvonat [6]
3 years ago
9

Can anyone tell me the ans of this last question quick please

Physics
1 answer:
tia_tia [17]3 years ago
8 0

Explanation:

Speed: distance/time

Average speed: total distance/total time

Total distance: 400

Total time: 60

Average spead: 400/60= 6.67m/s

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Any forensic scientist is equipped to study an explosion crime site.
arsen [322]

Answer:

false

Explanation:

I had the same answer for this question on my schoolwork

:) HOPE THIS HELPS

3 0
3 years ago
A person is filling a knee-high bucket with water using a garden hose and holding it such that water discharges from the hose at
Serggg [28]

Answer:

Yes i am agree with this suggestion

Explanation:

Given that we have to assume that there is no any frictional affects.

As we know that when height increases then the discharge level will decreases when discharge level decreases then the time of filling for the bucket will increase.So the  bucket will fill faster if the hose lowered until knee level.

Yes i am agree with this suggestion

8 0
3 years ago
John pushes his bed to the left overcoming the force of friction. On the free-body diagram below, which force represents the fri
mamaluj [8]

Answer:

<em>Force B</em>

Explanation:

<u>Friction Force </u>

It's a force that appears when an object is tried to move on a rough surface. There are two cases: when the object is at rest, we have the friction static coefficient and when the object is already moving, we have the dynamic coefficient. The static coefficient is usually greater than the second because it's harder to overcome the friction when the object is at rest.

We are told that John pushes the bed to the left with enough force to overcome the force of friction. If the movement is intended to be to the left side, the friction force appears to the right, since it always opposes to the movement. Thus the force B is the one who represents the friction force in this situation

6 0
4 years ago
Read 2 more answers
A certain kind of glass has an index of refraction of 1.640 for blue light of wavelength 440 nm and an index of 1.595 for red li
seraphim [82]

Answer: 18.27°

Explanation:

Given

Index of refraction of blue light, n(b) = 1.64

Wavelength of blue light, λ(b) = 440 nm

Index of refraction of red light, n(r) = 1.595

Wavelength of red light, λ(r) = 670 nm

Angle of incident, θ = 30°

Angle of refraction of red light is

θ(r) = sin^-1 [(n(a)* sin θ) / n(r)], where n(a) = index of refraction of air = 1

So that,

θ(r) = sin^-1 [(1 * sin 30) / 1.595]

θ(r) = sin^-1 (0.5 / 1.595)

θ(r) = sin^-1 0.3135

θ(r) = 18.27°

4 0
3 years ago
Imagine tying a string to ball and twirling it around you.how is this similar to the moon orbiting earth?in this example what is
guapka [62]
The changing force is you swinging the STRING
————-

this is similar because it’s on a set path and you are the earth and the gravitational pull is from the earth which the string represents
5 0
4 years ago
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