Answer:
a. tension of the cable attached to chair = 2.77kN
b. speed of the chair = 10.38m/s
Explanation:
A. tension of the cable is calculated by mass of the chair multiply by gravitational acceleration.
Tension(T) = m*g
where, m= 283kg
length of cable = 11m
and g=9.8m/s2
tension = mg = 283*9.8
=2773.4 N = 2.77kN
b. speed of the chair =
= 10.38m/s
Answer: Sean is standing still, and Rhea is running toward Sean while kicking the ball
Explanation: Your welcome :)
Carbon Dioxide and Water are used to make Glucose, Oxygen and Water
So Sunlight, Carbon Dioxide and Water
To make the motor turn faster we can:
(a) increase the current
(b) use stronger magnets
(c) push the magnets closer to the coil
(d) put an iron centre piece into the coil
(e) adding more sets of coils
-- The 'gas pedal' causes the car's speed to increase.
-- The brake pedal causes the car's speed to decrease.
-- The steering wheel causes the car's direction to change.
Each of these changes is a change in velocity, otherwise
known as an acceleration.