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harkovskaia [24]
3 years ago
11

April moves from a position that is 5 m north of her front door to a new position that is 3 m south of her front door. If this m

ovement takes her 4 seconds what is her velocity?
Physics
1 answer:
DanielleElmas [232]3 years ago
5 0

Velocity =

(displacement)/(time for the displacement), in the direction of the displacement.

Displacement = 8 m south
Time for the displacement = 4 seconds
Direction of the displacement = south

Velocity (8 m south) / (4 seconds), to the south

Velocity = 2 m/s, toward the south

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The thermosphere is a layer of Earth's atmosphere. The thermosphere is directly above the mesosphere and below the exosphere. It extends from about 90 km (56 miles) to between 500 and 1,000 km (311 to 621 miles) above our planet.
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Where is the sun in the life cycle? HELP ITS A FINAL EXAM
scZoUnD [109]

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3 years ago
A 7.94-nC charge is located 1.77 m from a 4.14-nC point charge. (a) Find the magnitude of the electrostatic force that one charg
STatiana [176]

Answer:

F=94.32*10⁻⁹N  , The force F is repusilve because both charges have the same sign (+)

Explanation:

Two point charges (q₁, q₂) separated by a distance (d) exert a mutual force (F) whose magnitude is determined by the following formula:  

F=K*q₁*q₂/d² Formula (1)  

F: Electric force in Newtons (N)

K : Coulomb constant in N*m²/C²

q₁,q₂:Charges in Coulombs (C)  

d: distance between the charges in meters(m)

Equivalence  

1nC= 10⁻⁹C

Data

K=8.99x10⁹N*m²/C²

q₁ = 7.94-nC= 7.94*10⁻⁹C

q₂= 4.14-nC=  4.14 *10⁻⁹C

d= 1.77 m

Magnitude of the electrostatic force that one charge exerts on the other

We apply formula (1):

F=8.99x10^{9} *\frac{7.94*10^{-9} *4.14 *10^{-9} }{1.77^{2} }

F=94.32*10⁻⁹N  , The force F is repusilve because both charges have the same sign (+)

7 0
3 years ago
А geostationary satellite moves in an orbit of radius 6300km. Calculate the speed with which it moves in the orbit [π=22÷7]​
azamat

Answer:

15.3 m/s

Explanation:

Radius of orbit= 6400+6300 = 12700 km

Circumference of orbit= 2*(22/7)*12700 =79796.45*10^3 m

Now,

       Speed= Distance / Time

                  = 79796.45*10^3/(24*60*3600)

                  = 15.3 m/s

4 0
2 years ago
The Pasig Revolving Tower has an estimated height of 45.23 meters. How high is it in yard? ​
hichkok12 [17]

Answer:

50.26

I hope its help

Thank you

6 0
3 years ago
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