Explanation

• The correct answer is: Simple machines magnify the force you use.
• This statement is true for many simple machines, such as levers, pulleys, and wheel and axle systems.
• Which are designed to multiply the force you apply, making it easier to lift, move, or apply force to an object.

Explanation

To find the speed, we can use the formula:

Speed = Distance / Time

Given:

Distance = 150 meters

Time = 5 seconds

Speed = 150 / 5

Speed = 30 m/s

So, the cycling speed of the girl is 30 meters per second.

Explanation

• Force is the only option that can change an object's speed.
• According to Newton's second law of motion, force is directly related to an object's acceleration, which is the change in speed over time.

Explanation

• Laboratory thermometers typically have a lower temperature range than clinical thermometers, and are designed to measure temperatures in a laboratory setting.
• The lowest temperature in a laboratory thermometer is often around -10°C or even lower, depending on the specific thermometer.

Explanation

When handling a clinical thermometer, you should:

• Wash it before use (to ensure cleanliness and accuracy)
• Stay at one place (to avoid moving around and potentially breaking the thermometer)
• Place it in a cover after use (to protect the thermometer from damage and contamination)

But you should not Run while handling a clinical thermometer, as this could cause the thermometer to break or become damaged.

Explanation

Force can change an object's:

• Direction (by changing its trajectory)
• Size (by compressing or expanding it)
• Speed (by accelerating or decelerating it)

But force cannot change an object's mass.

Mass is a fundamental property of an object that remains constant, regardless of the forces acting upon it.

Explanation

A force is a Push or a Pull that causes movement.

Explanation

• Clinical thermometers, also known as medical thermometers.
• It typically have a narrow range of 35°C to 42°C.
• Which covers the normal body temperature range of humans (37°C ± 2°C).
• This allows for accurate measurements of body temperature in medical settings.

Explanation

• Laboratory thermometers typically have a range of 10°C to 110°C.
• It allowing for precise temperature measurements in a variety of laboratory settings.

Explanation

• Bacteria are unicellular organisms.
• They have cell wall but don't have proper nucleus.
• It doesn't contain chlorophyll.
• It is used to make medicines, yogurt and cheese.
• Algae are unicellular with proper cell wall and nucleus.
• It contain chlorophyll.
• It causes diseases: Cutleria, Ulva and Volvox.