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Brilliant_brown [7]
3 years ago
10

Heat energy from the sun creates air currents called what?

Physics
1 answer:
oksian1 [2.3K]3 years ago
4 0
Those air currents are referred to as "wind".
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A: How far did she travel? <br><br><br><br> B: How long did she take?
allochka39001 [22]
A. 60 miles
B. 5 hours

Unless you are looking for slope, in which case the answer is different
7 0
3 years ago
A toy rocket is fired vertically into the air from the ground at an initial velocity of 80 feet per second. Find the time it wil
miskamm [114]

Answer: 16.3 seconds

Explanation: Given that the

Initial velocity U = 80 ft/s

Let's first calculate the maximum height reached by using third equation of motion.

V^2 = U^2 - 2gH

Where V = final velocity and H = maximum height.

Since the toy is moving against the gravity, g will be negative.

At maximum height, V = 0

0 = 80^2 - 2 × 9.81 × H

6400 = 19.62H

H = 6400/19.62

H = 326.2

Let's us second equation of motion to find time.

H = Ut - 1/2gt^2

Let assume that the ball is dropped from the maximum height. Then,

U = 0. The equation will be reduced to

H = 1/2gt^2

326.2 = 1/2 × 9.81 × t^2

326.2 = 4.905t^2

t^2 = 326.2/4.905

t = sqrt( 66.5 )

t = 8.15 seconds

The time it will take for the rocket to return to ground level will be 2t.

That is, 2 × 8.15 = 16.3 seconds

8 0
4 years ago
Calculate the acceleration of a 1000 kg car if the motor provides a small thrust of 1000 N and the static and dynamic friction c
grin007 [14]

Explanation :

It is given that,

Mass of the car, m = 1000 kg              

Force applied by the motor, F_A=1000\ N

The static and dynamic friction coefficient is, \mu=0.5

Let a is the acceleration of the car. Since, the car is in motion, the coefficient of sliding friction can be used. At equilibrium,

F_A-\mu mg=ma

\dfrac{F_A-\mu mg}{m}=a

a=\dfrac{1000-0.5(1000)(9.81)}{1000}

a=-3.905\ m/s^2

So, the acceleration of the car is -3.905\ m/s^2. Hence, this is the required solution.

6 0
3 years ago
At a certain instant, the speedometer of the car indicates 80 km/h.
Scorpion4ik [409]

Answer:

  • <em>It</em><em> </em><em>tells</em><em> </em><em>the</em><em> </em><em>speed</em><em> </em><em>of</em><em> </em><em>car</em><em>.</em><em> </em><em>At</em><em> </em><em>this</em><em> </em><em>time</em><em> </em><em>the</em><em> </em><em>speed</em><em> </em><em>of</em><em> </em><em>car</em><em> </em><em>is</em><em> </em><em>8</em><em>0</em><em>k</em><em>m</em><em>/</em><em>h</em><em> </em><em>,</em><em> </em><em>means</em><em> </em><em>if</em><em> </em><em>the</em><em> </em><em>car</em><em> </em><em>runs</em><em> </em><em>constantly</em><em> </em><em>at</em><em> </em><em>this</em><em> </em><em>speed</em><em> </em><em>then</em><em> </em><em>it</em><em> </em><em>will</em><em> </em><em>cover</em><em> </em><em>8</em><em>0</em><em> </em><em>kilometres</em><em> </em><em>in</em><em> </em><em>1</em><em> </em><em>hour</em><em>.</em><em> </em>

<em>.</em><em> </em>

<em>.</em><em> </em>

<em>.</em>

{\bold{\red{HOPE\:IT\:HELPS!}}}

\color{yellow}\boxed{\colorbox{black}{MARK\: BRAINLIEST!❤}}

4 0
2 years ago
a body is moving with uniform acceleration, has initial velocity 45km/hr. and acceleration 20cm/s^2. find its velocity after 25
Eddi Din [679]
That’s hard wow!!!!!!
7 0
3 years ago
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