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This is a force which acts on a body by directing the body towards its centre. Since the direction is continuously changing, the velocity therefore cannot be constant.
Mutiso answered the question on October 16, 2018 at 05:48
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A wheel of radius 50 cm is rolled through a quarter turn. Calculate (i) The angle rotated in radians (ii) The distance moved by a point on the circumference.
Date posted: October 16, 2018. Answers (1)
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Define radian.
Date posted: October 16, 2018. Answers (1)
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Date posted: October 16, 2018. Answers (1)
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Date posted: October 15, 2018. Answers (1)
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Date posted: October 15, 2018. Answers (1)
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Date posted: October 15, 2018. Answers (1)
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Date posted: October 15, 2018. Answers (1)
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The lens of a slide projector focuses on an image of height 1.5m on a screen placed 9.0 m from the projector. If the height of the picture on the slide was 6.5 cm, determine, (a) Distance from the slide (picture) to the lens (b) Focal length of the lens
Date posted: October 15, 2018. Answers (1)
- The focal length of a converging lens is found to be 10 cm. How far should the lens be placed from an illuminated object to...(Solved)
The focal length of a converging lens is found to be 10 cm. How far should the lens be placed from an illuminated object to obtain an image which is magnified five times on the screen?
Date posted: October 15, 2018. Answers (1)
- An object is placed 12 cm from a converging lens of focal length 18 cm. Find the position of the image(Solved)
An object is placed 12 cm from a converging lens of focal length 18 cm. Find the position of the image
Date posted: October 15, 2018. Answers (1)
- An object 0.05 m high is placed 0.15 m in front of a convex lens of focal length 0.1 m. Find by construction, the position,...(Solved)
An object 0.05 m high is placed 0.15 m in front of a convex lens of focal length 0.1 m. Find by construction, the position, nature and size of the image. What is the magnification?
Date posted: October 15, 2018. Answers (1)
- A horizontal pipe of cross-sectional area 50 cm2 carries water at the rate of 0.20 litres per second. Determine the speed;
a) Of the speed of...(Solved)
A horizontal pipe of cross-sectional area 50 cm2 carries water at the rate of 0.20 litres per second. Determine the speed;
a) Of the speed of water in the pipe.
b) When the tube narrows to 20 cm2 at another point.
Date posted: October 12, 2018. Answers (1)
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Outline the equation of continuity.
Date posted: October 12, 2018. Answers (1)
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Explain the occurrence of streamline and turbulent flow?
Date posted: October 12, 2018. Answers (1)
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What is line of flow?
Date posted: October 12, 2018. Answers (1)
- A girl claps her hands once at a distance 250 m from a vertical cliff. If the temperature in the surrounding is 5oC, how long...(Solved)
A girl claps her hands once at a distance 250 m from a vertical cliff. If the temperature in the surrounding is 5oC, how long does it take for her to hear the echo?
Date posted: October 12, 2018. Answers (1)
- A boy strikes a railway line (steel) with a hammer. If the speed of sound in steel is 5,200 m/s, determine the time taken for...(Solved)
A boy strikes a railway line (steel) with a hammer. If the speed of sound in steel is 5,200 m/s, determine the time taken for the sound to reach another boy 2.3 km down the railway line with his ear on the rail.
Date posted: October 12, 2018. Answers (1)
- What are the characteristics of sound waves?(Solved)
What are the characteristics of sound waves?
Date posted: October 12, 2018. Answers (1)
- The figure below illustrates part of the displacement-time graph of a wave travelling across water at a particular place with a velocity of 2 ms-1....(Solved)
The figure below illustrates part of the displacement-time graph of a wave travelling across water at a particular place with a velocity of 2 ms-1. Calculate the wave’s; (a) Amplitude (b) Frequency (f) (c) Wavelength
Date posted: October 12, 2018. Answers (1)