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Strike441 [17]
3 years ago
14

How does increasing the distance between charged objects affect the electric force between them?

Physics
1 answer:
mina [271]3 years ago
6 0

Answer: energy force

Explanation:

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It takes 15 min to drive 6.0 mi in a straight line to the local hospital. It takes 10 min to go the last 3.0 mi, 2.0 min to go t
Gala2k [10]

Answer:

36.87 km/h

Explanation:

Convert all the units in SI system

1 mile = 1609.34 m

d1 = 6 mi = 9656.04 m

t1 = 15 min = 15 x 60 = 900 s

d2 = 3 mi = 4828.02 m

t2 = 10 min = 10 x 60 = 600 s

d3 = 1 mi = 1609.34 m

t3 = 2 min = 2 x 60 = 120 s

d4 = 0.5 mi = 804.67 m

t4 = 0.5 min = 0.5 x 60 = 30 s

Total distance, d = d1 + d2 + d3 + d4

d = 9656.04 + 4828.02 +  1609.34 + 804.67 = 16898.07 m = 16.898 km

total time, t = t1 + t2 + t3 + t4

t = 900 + 600 + 120 + 30 = 1650 s = 0.4583 h

The ratio of the total distance covered to the total time taken is called average speed.

Average speed = 16.898 / 0.4583 = 36.87 km/h

6 0
3 years ago
A motorcycle accelerates from a stop at a rate of 4m/s 2 for 20 seconds. It then continues at a
8_murik_8 [283]

After 20 s, the motorcycle attains a speed of

\left(4\dfrac{\rm m}{\mathrm s^2}\right)(20\,\mathrm s)=80\dfrac{\rm m}{\rm s}

and it continues at this speed for the next 40 s. So at 45 s, its speed is 80 m/s.

4 0
3 years ago
Jesse wants to know how well a particular brand of car wax protects his car from dirt. Which of the following is a variable that
sweet [91]
B but I'm not fo sure .
4 0
3 years ago
When you pedal a bicycle, maximum torque is produced when the pedal sprocket arms are in the horizontal position, and no torque
poizon [28]

Answer:

This is because when the pedal sprocket arms are in the horizontal position, it is perpendicular to the applied force, and the angle between the applied force and the pedal sprocket arms is 90⁰.  

Also, when the pedal sprocket arms are in the vertical position, it is parallel to the applied force, and the angle between the applied force and the pedal sprocket arms is 0⁰.

Explanation:

τ = r×F×sinθ

where;

τ is the torque produced

r is the radius of the pedal sprocket arms

F is the applied force

θ is the angle between the applied force and the pedal sprocket arms

Maximum torque depends on the value of θ,

when the pedal sprocket arms are in the horizontal position, it is perpendicular to the applied force, and the angle between the applied force and the pedal sprocket arms is 90⁰.

τ = r×F×sin90⁰ = τ = r×F(1) = Fr (maximum value of torque)

Also, when the pedal sprocket arms are in the vertical position, it is parallel to the applied force, and the angle between the applied force and the pedal sprocket arms is 0⁰.

τ = r×F×sin0⁰ = τ = r×F(0) = 0 (torque is zero).

4 0
3 years ago
Newton was outraged when in 1684 german mathematician wilhelm leibniz published a calculus book find out why and describe how th
Makovka662 [10]
<span>Newton and Leibniz feuded over who invented calculus. Newton had proabaly come up with the idea eariler, but Leibniz took the spotlight by publishing first. Complicating things were their respecitve home countries, England and France, which had their own rivalry at the time. Further complicating matters was that they discovered different types of calculus, and had different notations. Today, beggining calculus students use methods and notations similar to Leibniz, but Newton's methods come into use in higher level classes.</span>
8 0
3 years ago
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