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- What does Self demagnetisation mean?(Solved)
What does Self demagnetisation mean?
Date posted: April 11, 2019. Answers (1)
- What does Shielding a magnetic material mean?.(Solved)
What does Shielding a magnetic material mean?.
Date posted: April 11, 2019. Answers (1)
- What is meant by the term magnetic lines of force-(Solved)
What is meant by the term magnetic lines of force-
Date posted: April 11, 2019. Answers (1)
- Define the term magnetic field(Solved)
Define the term magnetic field.
Date posted: April 11, 2019. Answers (1)
- The diagram below shows the magnetic field pattern between two magnets, P and Q(Solved)
The diagram below shows the magnetic field pattern between two magnets, P and Q
State which of the two magnets P and Q is stronger. Explain
Date posted: April 11, 2019. Answers (1)
- Define the following terms (i)Area (ii)Volume (iii)Mass (iv)Density(Solved)
Define the following terms
(i)Area
(ii)Volume
(iii)Mass
(iv)Density
Date posted: April 11, 2019. Answers (1)
- Define the following terms; (i)A laboratory (ii)hypothesis (iii)A law or principle (iv)A theorem (Solved)
Define the following terms;
i)A laboratory
ii)hypothesis
iii)A law or principle
iv)A theorem
Date posted: April 11, 2019. Answers (1)
- State six branches of physics and what they deal with.(Solved)
State six branches of physics and what they deal with.
Date posted: April 11, 2019. Answers (1)
- A ball is thrown horizontally from the top of a building and lands 100 m from the foot
of the building. If the building is 60...(Solved)
A ball is thrown horizontally from the top of a building and lands 100 m from the foot
of the building. If the building is 60 m high, calculate
a. The time of flight of the ball
b. Initial horizontal component of the velocity
c. Vertical component velocity of the ball just before it hits the ground?
Date posted: April 10, 2019. Answers (1)
- An object falls from a helicopter moving horizontally at a speed of 200 m/s. given that
the helicopter is at a height of 8 km from...(Solved)
An object falls from a helicopter moving horizontally at a speed of 200 m/s. given that
the helicopter is at a height of 8 km from the ground, calculate
a. Time it takes the object to reach the ground
b. The distance travelled by the object in this time
Date posted: April 10, 2019. Answers (1)
- A piece of ice breaks off a hanging cliff and falls 45 m to hit water below. Determine
the time it takes and the velocity at...(Solved)
A piece of ice breaks off a hanging cliff and falls 45 m to hit water below. Determine
the time it takes and the velocity at which it the water.
Date posted: April 10, 2019. Answers (1)
- From the bottom of a building, a student notices that it takes 4 s for a stone projected
upwards with to hit the ground. If the...(Solved)
From the bottom of a building, a student notices that it takes 4 s for a stone projected
upwards with to hit the ground. If the stone water released with an initial velocity of
8 m/s, find the height of the building.
Date posted: April 10, 2019. Answers (1)
- A ball is projected vertically upwards with an initial velocity of 20 m/s. Determine
a. its maximum height
b. the time taken to return to its starting...(Solved)
A ball is projected vertically upwards with an initial velocity of 20 m/s. Determine
a. its maximum height
b. the time taken to return to its starting point.
Date posted: April 10, 2019. Answers (1)
- The figure below shows a 10- tick strip ticker tape chart of for the motion of a trolley. The ticker
tape timer was connected to a...(Solved)
The figure below shows a 10- tick strip ticker tape chart of for the motion of a trolley. The ticker
tape timer was connected to a 50 Hz power supply. Which of the following statements is
true about the motion of the trolley?
Calculate the
a. total distance travelled
b. average velocity
c. acceleration of the trolley
Date posted: April 10, 2019. Answers (1)
- The figure below shows a ticker-tape for trolley used in an experiment.(Solved)
The figure below shows a ticker-tape for trolley used in an experiment.
If the frequency of the ticker timer was 50Hz, calculate,
a. Initial velocity
b. Final velocity
c. Acceleration of the trolley
Date posted: April 10, 2019. Answers (1)
- The ticker-tape in the figure below was produced by a trolley moving over an inclined
plane. If the ticker-tape timer produced 50 dots per second, find...(Solved)
The ticker-tape in the figure below was produced by a trolley moving over an inclined
plane. If the ticker-tape timer produced 50 dots per second, find the
a. Initial velocity at P
b. Final velocity at Q
c. Acceleration of the toy car.
Date posted: April 10, 2019. Answers (1)
- A car moving at 30m/s decelerates uniformly to rest in 6 seconds. The car then
reverses back to its original starting point with a uniform acceleration...(Solved)
A car moving at 30m/s decelerates uniformly to rest in 6 seconds. The car then
reverses back to its original starting point with a uniform acceleration in 6 seconds.
On the axes provided, sketch a velocity – time graph for the whole motion.
Date posted: April 10, 2019. Answers (1)
- An athlete swims from the east end to the west end of a 75 m pool in 25 s and makes the return trip to...(Solved)
An athlete swims from the east end to the west end of a 75 m pool in 25 s and makes the
return trip to the starting position in 28 s. calculate the,
a. Average velocity outwards
b. Average velocity back
c. Average velocity for the roundtrip
Date posted: April 10, 2019. Answers (1)
- A train increases its velocity steadily from 15 m/s to 30 m/s in 1 minute. What is its average
velocity and acceleration during this time?(Solved)
A train increases its velocity steadily from 15 m/s to 30 m/s in 1 minute. What is its average
velocity and acceleration during this time?
Date posted: April 10, 2019. Answers (1)
- Maureen, an automotive engineer, claims her car can go from 0 to 120 km/h in 5 seconds.
Determine(Solved)
Maureen, an automotive engineer, claims her car can go from 0 to 120 km/h in 5 seconds.
Determine
a. The average acceleration of her car
b. The speed of the car in km/h after 2 seconds
Date posted: April 10, 2019. Answers (1)