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laila [671]
4 years ago
10

DEFINE the word Direction:

Physics
2 answers:
soldi70 [24.7K]4 years ago
7 0
A course of someone or something moving in a certain way
Sidana [21]4 years ago
6 0

Answer:

Direction: a course along which someone or something moves.

OAmalOHopeO

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A standard door into a house rotates about a vertical axis through one side, as defined by the door's hinges. A uniform magnetic
AleksandrR [38]

Answer:

The angle that the door must rotate is 70.5 graus

Explanation:

When the door rotates through and angel X, the magnetic flux that passes through the door decreases from its maximum value to 0.3 of its maximum value

This way,

X = 0.3 Xmax

X = B A cosX = 0.3 B A  

or

cosX = 0.3

or

X = cos^{-1} (0.3) = 70.5

X = 70.5 graus

5 0
4 years ago
Why aren’t there more craters on earth than the moon.
earnstyle [38]

Answer:

Earths atmosphere causes most small to medium meteors to burn up disintergrate before hitting the earth the moon does not have a protective atmosphere

6 0
3 years ago
Determine the stopping distances for a car with an initial speed of 88 km/h and human reaction time of 2.0 s for the following a
seropon [69]

Explanation:

Given that,

Initial speed of the car, u = 88 km/h = 24.44 m/s

Reaction time, t = 2 s

Distance covered during this time, d=24.44\times 2=48.88\ m

(a) Acceleration, a=-4\ m/s^2

We need to find the stopping distance, v = 0. It can be calculated using the third equation of motion as :

s=\dfrac{v^2-u^2}{2a}

s=\dfrac{-(24.44)^2}{2\times -4}

s = 74.66 meters

s = 74.66 + 48.88 = 123.54 meters

(b) Acceleration, a=-8\ m/s^2

s=\dfrac{v^2-u^2}{2a}

s=\dfrac{-(24.44)^2}{2\times -8}

s = 37.33 meters

s = 37.33 + 48.88 = 86.21 meters

Hence, this is the required solution.

4 0
4 years ago
Which describes what happens when a wave transfers energy?
LenaWriter [7]
It carries a forward energy to keep the wave moving till it dies out 
4 0
4 years ago
A cheetah goes from 0m/s to 25m/s in 2.5 s. What is the cheetah's rate of acceleration?
RUDIKE [14]

Answer:

10 m/s²

Explanation:

Acceleration: This the rate of change of velocity. The unit of acceleration is m/s²

From the question,

a = (v-u)/t.................... Equation 1

Where a = acceleration of the cheetah, v = final velocity of the cheetah, u = initial velocity of the cheetah, t = time.

Given: u = 0 m/s, v = 25 m/s, t = 2.5 s.

Substitute these values into equation 1

a = (25-0)/2.5

a = 25/2.5

a = 10 m/s²

Hence the acceleration of the cheetah = 10 m/s²

6 0
3 years ago
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