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1. Contact method
2. Induction method
chrispohmomanyi answered the question on October 9, 2017 at 11:00
- State the functions of the following parts of the gols-leaf electroscope.
1. Insulator
2. Metal plate(Solved)
State the functions of the following parts of the gols-leaf electroscope.
1. Insulator
2. Metal plate
Date posted: October 9, 2017. Answers (1)
- State three methods of demagnetization (Solved)
State three methods of demagnetization
Date posted: October 9, 2017. Answers (1)
- State four methods of magnetization.(Solved)
State four methods of magnetization.
Date posted: October 9, 2017. Answers (1)
- Define dispersion as used in refraction.(Solved)
Define dispersion as used in refraction.
Date posted: October 9, 2017. Answers (1)
- Define the absolute refractive index of a medium.(Solved)
Define the absolute refractive index of a medium.
Date posted: October 9, 2017. Answers (1)
- State the main disadvantage of convex mirrors.(Solved)
State the main disadvantage of convex mirrors.
Date posted: October 9, 2017. Answers (1)
- State two applications of lens.(Solved)
State two applications of lens.
Date posted: October 8, 2017. Answers (1)
- State any three disadvantages of a liquid in glass thermometers(Solved)
State any three disadvantages of a liquid in glass thermometers
Date posted: October 8, 2017. Answers (1)
- State any three types of thermometers(Solved)
State any three types of thermometers
Date posted: October 8, 2017. Answers (1)
- A machine uses an effort of 500 N to raise a load of 800 N. it has an efficiency of 80%. Determine its velocity ratio.(Solved)
A machine uses an effort of 500 N to raise a load of 800 N. it has an efficiency of 80%. Determine its velocity ratio.
Date posted: October 6, 2017. Answers (1)
- A wooden block of mass 3 kg was placed on a horizontal surface. A force 34 N applied horizontally produced an acceleration of 8...(Solved)
A wooden block of mass 3 kg was placed on a horizontal surface. A force 34 N applied horizontally produced an acceleration of 8 m/s^2. Determine the frictional force between the block and the surface.
Date posted: October 6, 2017. Answers (1)
- A hockey player hits a ball mass 0.8 kg initially at rest using a force of 840 N. if the hockey stick was in contact...(Solved)
A hockey player hits a ball mass 0.8 kg initially at rest using a force of 840 N. if the hockey stick was in contact with the ball for 0.2 seconds, what was the speed the ball took off with?
Date posted: October 6, 2017. Answers (1)
- A boy jumped from a platform and landed on a mattress. Explain how the mattress helps in reducing the force of impact.(Solved)
A boy jumped from a platform and landed on a mattress. Explain how the mattress helps in reducing the force of impact.
Date posted: October 6, 2017. Answers (1)
- Water has a refractive index of 1.35. Determine the speed of light in water given that the speed light in air is 3.0 x 10^8...(Solved)
Water has a refractive index of 1.35. Determine the speed of light in water given that the speed light in air is 3.0 x 10^8 m/s
Date posted: October 6, 2017. Answers (1)
- A glass of refractive index 1.44 allow light to travel through if at a speed v.
calculate the value of v given that the speed...(Solved)
A glass of refractive index 1.44 allow light to travel through if at a speed v.
calculate the value of v given that the speed of light in air =3 x 10^8 m/s.
Date posted: October 6, 2017. Answers (1)
- A stone was projected upwards and reached a height of 200 m. Determine the:
i. Initial velocity of the stone (ignore air resistance and take g =...(Solved)
A stone was projected upwards and reached a height of 200 m. Determine the:
i. Initial velocity of the stone (ignore air resistance and take g = 10 m/s^2)
ii. Total time the stone is in air
Date posted: October 6, 2017. Answers (1)
- A lawn tennis ball of mass 300 g is thrown vertically upwards with a vertically of 10 m/s. The air cause a resistance of 10...(Solved)
A lawn tennis ball of mass 300 g is thrown vertically upwards with a vertically of 10 m/s. The air cause a resistance of 10 m/s. The air caused a resistance of 0.5 N.
Determine
a. The net force on the ball as it moves up. (Take g=10m/s)
b. The acceleration of the ball
c. The maximum height reached by the ball.
Date posted: October 6, 2017. Answers (1)
- A simple pendulum was used by a student to determine the acceleration due to gravity, g, she obtained the following values: L = 80.0 cm,...(Solved)
A simple pendulum was used by a student to determine the acceleration due to gravity, g, she obtained the following values: L = 80.0 cm, the period T was 1.9s. given that T=2π√(l/g) determine the value of g correct to two significant figures.
Date posted: October 6, 2017. Answers (1)
- A bullet hit a tree trunk of diameter 100 cm at a velocity of 500 m/s, emerging from the other opposite side with a velocity...(Solved)
A bullet hit a tree trunk of diameter 100 cm at a velocity of 500 m/s, emerging from the other opposite side with a velocity of 200 m/s. Determine the average deceleration of the bullet in the trunk.
Date posted: October 6, 2017. Answers (1)
- State two types of potential energy(Solved)
State two types of potential energy
Date posted: October 6, 2017. Answers (1)