Many electron are involved in heat transfer with minimal heat loss
lydiajane74 answered the question on October 16, 2017 at 07:20
- An air bubble expands as it rises to the surface of water in a deep pond. State the cause of this given that the temperature...(Solved)
An air bubble expands as it rises to the surface of water in a deep pond. State the cause of this given that the temperature remains constant.
Date posted: October 16, 2017. Answers (1)
- Explain why Fuel tankers have loose chain under them to touch the ground as they move.(Solved)
Explain why Fuel tankers have loose chain under them to touch the ground as they move.
Date posted: October 16, 2017. Answers (1)
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Explain why long trucks are fixed with many wheels
Date posted: October 16, 2017. Answers (1)
- Define the following terms(i)Mechanical advantage(ii)Velocity ratio(iii)Efficiency(Solved)
Define the following terms
(i)Mechanical advantage
(ii)Velocity ratio
(iii)Efficiency
Date posted: October 16, 2017. Answers (1)
- State Snells' law(Solved)
State Snells' law
Date posted: October 16, 2017. Answers (1)
- State and explain why plane mirrors are not suitable as side view mirrors of motor vehicle(Solved)
State and explain why plane mirrors are not suitable as side view mirrors of motor vehicle
Date posted: October 14, 2017. Answers (1)
- Smoke particle in air when strongly illuminated were observed to describe continuous, random haphazard movements.Explain what would be observed when the air temperature is decreased....(Solved)
Smoke particle in air when strongly illuminated were observed to describe continuous, random haphazard movements. Explain what would be observed when the air temperature is decreased.
Date posted: October 14, 2017. Answers (1)
- Define the following terms (i) Wavelength (2) Frequency (3) Amplitude(Solved)
Define the following terms (i) Wavelength (2) Frequency (3) Amplitude
Date posted: October 14, 2017. Answers (1)
- It is observed that when air bubbles rises from the bottom of a glass filled with water its size increases.Explain this observation(Solved)
It is observed that when air bubbles rises from the bottom of a glass filled with water its size increases.Explain this observation
Date posted: October 14, 2017. Answers (1)
- Water in a pond may freeze on the surface but not deep inside the pond explain?(Solved)
Water in a pond may freeze on the surface but not deep inside the pond explain?
Date posted: October 14, 2017. Answers (1)
- State the function of a fuse in an electrical appliances?(Solved)
State the function of a fuse in an electrical appliances?
Date posted: October 14, 2017. Answers (1)
- A turntable is rotating at 66 revolutions per second. If it is 6 cm in radius determine the linear speed of a point made on...(Solved)
A turntable is rotating at 66 revolutions per second. If it is 6 cm in radius determine the linear speed of a point made on its circumference.
Date posted: October 12, 2017. Answers (1)
- A vehicle of mass 900 kg moves on a circular path of 30 m. The force of friction between the tyres and the tarmac is...(Solved)
A vehicle of mass 900 kg moves on a circular path of 30 m. The force of friction between the tyres and the tarmac is 5400 N. Determine the maximum speed at which the vehicle can be driven on the path without skidding.
Date posted: October 12, 2017. Answers (1)
- A body of mass 1.00 kg is tied to the end of a string 100 cm long and it is whirled in a horizontal circle....(Solved)
A body of mass 1.00 kg is tied to the end of a string 100 cm long and it is whirled in a horizontal circle. If the tension experienced in the string is 162 N, determine the velocity of the body.
Date posted: October 12, 2017. Answers (1)
- A small body moving in a horizontal circle of radius 0.4 makes 16 revolutions per second. Determine its centripetal acceleration.(Solved)
A small body moving in a horizontal circle of radius 0.4 makes 16 revolutions per second. Determine its centripetal acceleration.
Date posted: October 12, 2017. Answers (1)
- A car of mass 1400 kg is moving with a velocity of 35 m/s around a flat bend of radius 300 m. what is the...(Solved)
A car of mass 1400 kg is moving with a velocity of 35 m/s around a flat bend of radius 300 m. what is the minimum force between the types and the road that will prevent the car from sliding off.
Date posted: October 12, 2017. Answers (1)
- A bucket of water was swung in a vertical circle without the water pouring out. Explain.(Solved)
A bucket of water was swung in a vertical circle without the water pouring out. Explain.
Date posted: October 12, 2017. Answers (1)
- A balloon of volume 300 ml at a temperature of 393 K was filled with air. Determine the volume when the temperature rises to 473...(Solved)
A balloon of volume 300 ml at a temperature of 393 K was filled with air. Determine the volume when the temperature rises to 473 K at the same pressure.
Date posted: October 12, 2017. Answers (1)
- If a gas in a cylinder initially at 30°C and at a pressure of 1.03 x 10^5 pa is compressed to one sixth of its...(Solved)
If a gas in a cylinder initially at 30⁰C and at a pressure of 1.03 x 10^5 pa is compressed to one sixth of its original volume. Determine the pressure required to do this.
Date posted: October 12, 2017. Answers (1)
- Some 4 kg water in a plastic jug was heated using an immersion heated 2.0 kw. It was on for 6 minutes. Determine
a. The quantity...(Solved)
Some 4 kg water in a plastic jug was heated using an immersion heated 2.0 kw. It was on for 6 minutes. Determine
a. The quantity of heat gained by the water.
b. The temperature change
Date posted: October 12, 2017. Answers (1)