Physics: Dynamics of the Body 3.1 Forces Quiz

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Which force is referred to as the force of gravitation on an object near the surface of a celestial body?

Electrical force

Nuclear force

Frictional force

Gravitational force (correct)

What is the unit of measuring force?

Dyne

Newton (correct)

Joule

Pascal

What is the measure of the gravitational force on an object near the surface of the earth?

$F_g = mg$ (correct)

$F_g = m + g$

$F_g = m/g$

$F_g = m - g$

What important medical effect does gravity have on the body according to the text?

Development of varicose veins Signup and view all the answers

What is the value of the gravity constant (g) near the surface of the earth?

$9.8 m/s^2$ Signup and view all the answers

What is the measure of weight (W) in terms of mass (m) and gravity constant (g) according to the text?

$W = F_g = mg$ Signup and view all the answers

What could cause failure of the one way valves in the venous system?

Obesity Signup and view all the answers

In a weightless region, what can happen to a person's bone minerals?

They will lose some of their bone minerals Signup and view all the answers

Which force is significantly greater than the gravitational force between an electron and a proton in a hydrogen atom?

Electrical force Signup and view all the answers

What is responsible for supporting and moving the skeleton by contraction?

Skeletal muscle force Signup and view all the answers

What is the function of the nuclear force?

Holds protons and neutrons together in the nucleus of the atom Signup and view all the answers

How are muscle fibers bound together to form the muscle?

By connective tissue Signup and view all the answers

What are muscles connected to bones by?

Tendons Signup and view all the answers

What causes production of magnetic fields when they move?

Electric charges Signup and view all the answers

What causes transmission of signals in the nervous system?

Electric charges Signup and view all the answers

What is the measure of weight (W) in terms of mass (m) and gravity constant (g) according to the text?

$W = mg$ Signup and view all the answers

What important medical effect does gravity have on the body according to the text?

Enlargement of veins leading to varicose formation Signup and view all the answers

What causes production of magnetic fields when they move?

Electrical force Signup and view all the answers

What are muscles connected to bones by?

Tendons Signup and view all the answers

What causes transmission of signals in the nervous system?

Neurotransmitters Signup and view all the answers

Which force acts only within extremely small distances between nucleons?

Nuclear force Signup and view all the answers

What is the diameter range of skeletal muscle fibers?

10-100μm Signup and view all the answers

What causes the production of magnetic fields when electric charges move?

Electric forces Signup and view all the answers

What is the approximate ratio of the electrical force to the gravitational force between an electron and a proton in a hydrogen atom?

$10^{39}:1$ Signup and view all the answers

What can cause failure of the one way valves in the venous system according to the text?

Obesity Signup and view all the answers

Physics: Dynamics of the Body 3.1 Forces Quiz

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Questions and Answers

Which force is referred to as the force of gravitation on an object near the surface of a celestial body?

What is the unit of measuring force?

What is the measure of the gravitational force on an object near the surface of the earth?

What important medical effect does gravity have on the body according to the text?

What is the value of the gravity constant (g) near the surface of the earth?

What is the measure of weight (W) in terms of mass (m) and gravity constant (g) according to the text?

What could cause failure of the one way valves in the venous system?

In a weightless region, what can happen to a person's bone minerals?

Which force is significantly greater than the gravitational force between an electron and a proton in a hydrogen atom?

What is responsible for supporting and moving the skeleton by contraction?

What is the function of the nuclear force?

How are muscle fibers bound together to form the muscle?

What are muscles connected to bones by?

What causes production of magnetic fields when they move?

What causes transmission of signals in the nervous system?

What is the measure of weight (W) in terms of mass (m) and gravity constant (g) according to the text?

What important medical effect does gravity have on the body according to the text?

What causes production of magnetic fields when they move?

What are muscles connected to bones by?

What causes transmission of signals in the nervous system?

Which force acts only within extremely small distances between nucleons?

What is the diameter range of skeletal muscle fibers?

What causes the production of magnetic fields when electric charges move?

What is the approximate ratio of the electrical force to the gravitational force between an electron and a proton in a hydrogen atom?

What can cause failure of the one way valves in the venous system according to the text?

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