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The keepers acquire opposite polarity and keep the dipoles in a closed loop retaining their magnetic strength
john3 answered the question on October 20, 2017 at 03:45
- State the reason why mercury is used in thermometer and not water(Solved)
State the reason why mercury is used in thermometer and not water
Date posted: October 19, 2017. Answers (1)
- A block of lead of density 11.3g/cm^3 measures 10 cm x 6cm x 4cm, given that the force of gravity is 10 Nkg^-1. Determine...(Solved)
A block of lead of density 11.3g/cm^3 measures 10 cm x 6cm x 4cm, given that the force of gravity is 10 Nkg^-1. Determine
a. The maximum pressure
b. The minimum pressure that it can exert on a horizontal surface.
Date posted: October 18, 2017. Answers (1)
- The density of mercury is 13600 kg/m^3. Determine the liquid pressure at a point 70 cm under the surface of the mercury. (take g =10...(Solved)
The density of mercury is 13600 kg/m^3. Determine the liquid pressure at a point 70 cm under the surface of the mercury. (take g =10 N/kg)
Date posted: October 18, 2017. Answers (1)
- A diver is 20 m below the surface of water in the sea. If the density of water is 1000 kg/m^3, determine the pressure due...(Solved)
A diver is 20 m below the surface of water in the sea. If the density of water is 1000 kg/m^3, determine the pressure due to the water on the diver. (take g= 10 N kg^-1)
Date posted: October 18, 2017. Answers (1)
- 9. How much force must be applied on a knife of length 15 cm, thickness 0.01mm to a pressure of 10000000pa?(Solved)
9. How much force must be applied on a knife of length 15 cm, thickness 0.01mm to a pressure of 10000000pa?
Date posted: October 18, 2017. Answers (1)
- A block of lead of density 11.3g/cm^3 measures 10 cm x 6cm x 4cm, given that the force of gravity is 10 Nkg^-1. Determine
a. The...(Solved)
A block of lead of density 11.3 g/cm^3 measures 10 cm x 6 cm x 4 cm, given that the force of gravity is
10 N kg^-1. Determine
a. The maximum pressure
b. The minimum pressure that it can exert on a horizontal surface.
Date posted: October 18, 2017. Answers (1)
- A student standing upright exerts a pressure of 27200Nm^-2 on the floor. Given that the total area of contact of shoes and the...(Solved)
A student standing upright exerts a pressure of 27200Nm^-2 on the floor. Given that the total area of contact of shoes and the floor is 0.0736 m^2.
a. Determine the mass of the student.
b. Determine the pressure the student would exert on the floor when stand on one foot.
Date posted: October 18, 2017. Answers (1)
- A force of 1000 N is applied to an area of 10000 mm^2. What is the pressure exerted on the area in pascals? (Solved)
A force of 1000 N is applied to an area of 10000 mm^2. What is the pressure exerted on the area in pascals?
Date posted: October 18, 2017. Answers (1)
- A woman of mass 90 kg stands upright on a tile floor. If the area of contact of her shoes and floor is 300 cm^2,...(Solved)
A woman of mass 90 kg stands upright on a tile floor. If the area of contact of her shoes and floor is 300 cm^2, determine the average pressure she exerts on the floor. (Take g=10 N kg^-1)
Date posted: October 18, 2017. Answers (1)
- The mass of space shuttle was found to be 500 kg. If it weight is 10000 N gravitational field strength of the planet.(Solved)
The mass of space shuttle was found to be 500 kg. If it weight is 10000 N gravitational field strength of the planet.
Date posted: October 18, 2017. Answers (1)
- Calculate the weights of the following mass
a. 4 kg
b. 550 g
c. 0.85 kg
d. 6000000 mg
(Solved)
Calculate the weights of the following mass
a. 4 kg
b. 550 g
c. 0.85 kg
d. 6000000 mg
Date posted: October 18, 2017. Answers (1)
- An astronaut weighs 1000 N on earth. On moon, he weight 200 N. Calculate the moon’s gravitational strength. (take g= 10 N kg^-1)(Solved)
An astronaut weighs 1000 N on earth. On moon, he weight 200 N. Calculate the moon’s gravitational strength. (take g= 10 N kg^-1)
Date posted: October 18, 2017. Answers (1)
- Calculate the weight of each of the following items:
a. A stone of 2.5 kg.
b. A pencil of mass 6.0g.
c. A tanker of 10 tonnes.
(Solved)
Calculate the weight of each of the following items:
a. A stone of 2.5 kg.
b. A pencil of mass 6.0g.
c. A tanker of 10 tonnes.
Date posted: October 18, 2017. Answers (1)
- State a property of electromagnetic wave on which the operation of a radar system is based (Solved)
State a property of electromagnetic wave on which the operation of a radar system is based
Date posted: October 17, 2017. Answers (1)
- State two conditions necessary for the occurrence of an annular eclipse ...(Solved)
State two conditions necessary for the occurrence of an annular eclipse
Date posted: October 17, 2017. Answers (1)
- Why does a gun recoil when it is fired?(Solved)
Why does a gun recoil when it is fired?
Date posted: October 17, 2017. Answers (1)
- State the difference between an ideal and real gas
(Solved)
State the difference between an ideal and real gas
Date posted: October 17, 2017. Answers (1)
- Explain why it is possible to compress gases but not solid or liquid (Solved)
Explain why it is possible to compress gases but not solid or liquid
Date posted: October 17, 2017. Answers (1)
- Explain how heat demagnetizes a magnet.(Solved)
Explain how heat demagnetizes a magnet.
Date posted: October 17, 2017. Answers (1)
- What is the angle of deviation(Solved)
What is the angle of deviation
Date posted: October 17, 2017. Answers (1)