Mechanical Equivalent of Heat Quiz

Who is credited with discovering the mechanical equivalent of heat?

• Niels Bohr

• Isaac Newton

• James Prescott Joule

• Albert Einstein

What was the primary focus of Joule's experiment?

• Converting mechanical work into heat

• Measuring the speed of light

• Studying the properties of gases

• Determining the gravitational constant

What is the specific heat of water in joules per gram per degree Celsius?

• 0.500 J/g°C

• 2.000 J/g°C

• 4.186 J/g°C

• 1.000 J/g°C

How many joules are equivalent to one big C calorie?

• 4186 joules

• 2000 joules

• 1000 joules

• 500 joules

What is the energy required to raise the temperature of 1 kg of water by 1°C?

• 1000 joules

• 5000 joules

• 4186 joules

• 2000 joules

What is the relationship between calories and kilocalories?

• 1 calorie = 10 kilocalories

• 1 kilocalorie = 1000 calories

• 1 kilocalorie = 100 calories

• 1 calorie = 100 kilocalories

If you consume 1100 calories, how much mechanical work must you do to burn them off?

• Climb 100 meters

• Climb 1300 meters

• Climb 2000 meters

• Climb 500 meters

How many kilograms of water can be boiled with 4.6 million joules of energy?

• 15 kg

• 10 kg

• 20 kg

• 5 kg

What is the efficiency of the human body in converting energy during exercise?

• 50%

• 100%

• 10%

• 20-25%

What is the significance of Joule's work in the context of energy conservation?

• It disproved the law of conservation of energy

• It established a relationship between mechanical work and heat

• It showed that energy cannot be converted

• It was unrelated to energy conservation