Explain why ventilations are put near the roof but not near the floor (Solved)

Explain why ventilations are put near the roof but not near the floor

Date posted: April 24, 2018 . Answers (1)
Define the following terms. a. Measurement b. Test c. Evaluation (Solved)

Define the following terms. a. Measurement b. Test c. Evaluation

Date posted: April 24, 2018 . Answers (1)
A butcher has a beam balance and masses 0.8 kg and 3 kg. How would he measure 2.2 kg of meat on the balance at once? (Solved)

A butcher has a beam balance and masses 0.8 kg and 3 kg. How would he measure 2.2 kg of meat on the balance at once?

Date posted: April 24, 2018 . Answers (1)
A car battery has 12V. 8 dry cells are equal to 12V. Explain why 8 dry cells are not able to start a car? (Solved)

A car battery has 12V. 8 dry cells are equal to 12V. Explain why 8 dry cells are not able to start a car?

Date posted: April 24, 2018 . Answers (1)
Given that a kg of copper contains 10^25 atoms and that density of copper is about 9000kg/m^3,estimate the diameter of the copper atom (Solved)

Given that a kg of copper contains 10^25 atoms and that density of copper is about 9000kg/m^3,estimate the diameter of the copper atom

Date posted: April 23, 2018 . Answers (1)
During a tsunami, a diver swam a depth of 10 cm. Determine the pressure exerted to him by water (Solved)

During a tsunami, a diver swam a depth of 10 cm. Determine the pressure exerted to him by water.

Date posted: April 23, 2018 . Answers (1)
A student observed that in the morning that overhead electrical cable is straight? Explain this observation (Solved)

A student observed that in the morning that overhead electrical cable is straight? Explain this observation.

Date posted: April 23, 2018 . Answers (1)
A butcher has a beam balance and only two masses of 3.5kg and 5kg.Explain how he can manage to measure for a customer 1.5kg of... (Solved)

A butcher has a beam balance and only two masses of 3.5kg and 5kg.Explain how he can manage to measure for a customer 1.5kg of meat at once using only the two masses

Date posted: April 23, 2018 . Answers (1)
A tin containing 5000cm3 of paint has a Mass of 70kg.a)If the mass of the empty tin,including the lid,is 0.5kg,calculate the density of the paint (Solved)

A tin containing 5000cm3 of paint has a Mass of 70kg.a)If the mass of the empty tin,including the lid,is 0.5kg,calculate the density of the paint

Date posted: April 23, 2018 . Answers (1)
Explain how the volatile liquid in a refrigerator is made to vaporize in the cooling compartment and to condense in the cooling fins (Solved)

Explain how the volatile liquid in a refrigerator is made to vaporize in the cooling compartment and to condense in the cooling fins

Date posted: April 22, 2018 . Answers (1)
Given that a kg of copper contains about 10^25 atoms and that the density of copper is about 9000kg/m^3.estimate the diameter of the copper atoms?State... (Solved)

Given that a kg of copper contains about 10^25 atoms and that the density of copper is about 9000kg/m^3. Estimate the diameter of the copper atoms?
State the assumption made.

Date posted: April 19, 2018 . Answers (1)
What is the difference between hard and soft magnets? (Solved)

What is the difference between hard and soft magnets?

Date posted: April 18, 2018 . Answers (1)
Describe the methods of magnetizing a magnetic material. (Solved)

Describe the methods of magnetizing a magnetic material.

Date posted: April 18, 2018 . Answers (1)
List the properties of magnets (Solved)

List the properties of magnets

Date posted: April 16, 2018 . Answers (1)
State the applications of radioactivity (Solved)

State the applications of radioactivity

Date posted: April 12, 2018 . Answers (1)
A radioactive substance has a half life of 10 hours. Calculate the percentage of the sample that remains after 25 hours. (Solved)

A radioactive substance has a half life of 10 hours. Calculate the percentage of the sample that remains after 25 hours.

Date posted: April 12, 2018 . Answers (1)
A radioactive substance is found to have an activity of 360 counts per second. 5minutes later, it was 45counts per second. Determine its half life. (Solved)

A radioactive substance is found to have an activity of 360 counts per second. 5 minutes later, it was 45 counts per second. Determine its half life.

Date posted: April 12, 2018 . Answers (1)
State the characteristics of gamma radiation (Solved)

State the characteristics of gamma radiation

Date posted: April 12, 2018 . Answers (1)
State the characteristics of beta radiation (Solved)

State the characteristics of beta radiation

Date posted: April 12, 2018 . Answers (1)
State the characteristics of alpha radiation (Solved)

State the characteristics of alpha radiation

Date posted: April 12, 2018 . Answers (1)