Physics 1

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Questions and Answers

What is the vector product of two parallel or antiparallel vectors?

  • Greater than 1
  • Equal to 1
  • Equal to 0 (correct)
  • Less than 1

What is the vector product of any vector with itself?

  • Greater than 1
  • Equal to 1
  • Less than 1
  • Equal to 0 (correct)

What refers to physical quantities that are completely specified by just a number and a unit or physical quantities that have magnitudes only?

  • Vector quantities
  • Scalar quantities (correct)
  • Vector product
  • Dot product

What refers to physical quantities that have a magnitude and a direction?

<p>Vector quantities (B), Vector quantities (C)</p> Signup and view all the answers

The dot product of two perpendicular vectors is always ______.

<p>Equal to 0 (B)</p> Signup and view all the answers

The cross product of two perpendicular vectors is always ______.

<p>Equal to 1 (A)</p> Signup and view all the answers

The magnitude of a vector is always ______.

<p>Positive (D)</p> Signup and view all the answers

The dot product of a vector with itself is always ______.

<p>Positive (B)</p> Signup and view all the answers

The cross product of a vector with itself is always ______.

<p>Zero (A)</p> Signup and view all the answers

The dot product of two parallel or antiparallel vectors is always ______.

<p>Zero (A)</p> Signup and view all the answers

What is the SI unit of force?

<p>Newton (B)</p> Signup and view all the answers

What is the SI unit of energy?

<p>Joule (C)</p> Signup and view all the answers

What is the SI unit of pressure?

<p>Pascal (C)</p> Signup and view all the answers

What is the SI unit of electric charge?

<p>Coulomb (A)</p> Signup and view all the answers

What is the SI unit of frequency?

<p>Hertz (D)</p> Signup and view all the answers

What is the SI unit of electric potential?

<p>Volt (A)</p> Signup and view all the answers

What is the SI unit of magnetic flux?

<p>Weber (D)</p> Signup and view all the answers

What is the SI unit of capacitance?

<p>Farad (B)</p> Signup and view all the answers

What is the SI unit of conductance?

<p>Siemens (B)</p> Signup and view all the answers

What is the SI unit of inductance?

<p>Henry (C)</p> Signup and view all the answers

What is the SI unit of pressure?

<p>Pascal (Pa) (D)</p> Signup and view all the answers

How many Pascals are equivalent to 1 bar?

<p>100,000 Pascals (C)</p> Signup and view all the answers

What is the SI unit of intensity?

<p>Watt per square meter (W/m^2) (C)</p> Signup and view all the answers

What is the unit of potential difference?

<p>Volt (V) (B)</p> Signup and view all the answers

What is the unit of capacitance?

<p>Farad (F) (B)</p> Signup and view all the answers

How many joules is one electron volt equivalent to?

<p>1.6 x 10^-19 joules (A)</p> Signup and view all the answers

What is the SI unit of electric current?

<p>Ampere (A) (B)</p> Signup and view all the answers

What is the SI unit of luminous intensity?

<p>Candela (cd) (D)</p> Signup and view all the answers

What is the unit of resistance?

<p>Ohm (Ω) (A)</p> Signup and view all the answers

In what unit is sound intensity measured?

<p>Decibels (dB) (C)</p> Signup and view all the answers

What is the SI unit of power?

<p>Watt (C)</p> Signup and view all the answers

What is the SI unit of luminous intensity?

<p>Candela (B)</p> Signup and view all the answers

What is the unit of relative intensity?

<p>Unitless (B)</p> Signup and view all the answers

What is the standard unit of mass?

<p>Kilogram (B)</p> Signup and view all the answers

What is the vector product of two parallel or antiparallel vectors?

<p>Equal to 0 (A)</p> Signup and view all the answers

What is the vector product of any vector with itself?

<p>Equal to 0 (A)</p> Signup and view all the answers

What refers to physical quantities that are completely specified by just a number and a unit or physical quantities that have magnitudes only?

<p>Scalar quantities (B)</p> Signup and view all the answers

What refers to physical quantities that have a magnitude and a direction?

<p>Vector quantities (B)</p> Signup and view all the answers

What is the dot product of two parallel or antiparallel vectors?

<p>Equal to 1 (C)</p> Signup and view all the answers

What is the dot product of any vector with itself?

<p>Equal to 1 (A)</p> Signup and view all the answers

What is the vector product of two perpendicular vectors?

<p>Equal to 1 (C)</p> Signup and view all the answers

What is the dot product of two perpendicular vectors?

<p>Equal to 0 (A)</p> Signup and view all the answers

What is the SI unit of power?

<p>Watt (W) (A)</p> Signup and view all the answers

What is the SI unit of magnetic flux?

<p>Weber (Wb) (C)</p> Signup and view all the answers

What is the SI unit of conductance?

<p>Siemens (S) (A)</p> Signup and view all the answers

What is the SI unit of electric charge?

<p>Coulomb (C) (D)</p> Signup and view all the answers

What is the SI unit of electric potential?

<p>Volt (V) (D)</p> Signup and view all the answers

What is the SI unit of energy?

<p>Joule (J) (A)</p> Signup and view all the answers

What is the SI unit of inductance?

<p>Henry (H) (C)</p> Signup and view all the answers

What is the SI unit of frequency?

<p>Hertz (Hz) (D)</p> Signup and view all the answers

What is the SI unit of force?

<p>Newton (N) (B)</p> Signup and view all the answers

What is the SI unit of pressure?

<p>Pascal (Pa) (A)</p> Signup and view all the answers

What is the SI unit of intensity?

<p>Watt per square meter (W/m^2) (A)</p> Signup and view all the answers

What is the SI unit of luminous flux?

<p>Lumen (lm) (D)</p> Signup and view all the answers

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Study Notes

Physics Units and Measurements

  • The SI unit of pressure is the Pascal (Pa).
  • 1 bar is equivalent to 100,000 Pascals.
  • The SI unit of intensity is the watt per square meter (W/m^2).
  • The unit of potential difference is the Volt (V).
  • One electron volt is equivalent to 1.6 x 10^-19 joules.
  • The unit of capacitance is the Farad (F).
  • The SI unit of electric current is the Ampere (A).
  • The unit of resistance is the Ohm (Ω).
  • The SI unit of luminous intensity is the Candela (cd).
  • The unit of luminous flux is the Lumen (lm).
  • One horsepower is equivalent to 746 watts.
  • Sound intensity is measured in decibels (dB).

Physics Units and Measurements

  • The SI unit of pressure is the Pascal (Pa).
  • 1 bar is equivalent to 100,000 Pascals.
  • The SI unit of intensity is the watt per square meter (W/m^2).
  • The unit of potential difference is the Volt (V).
  • One electron volt is equivalent to 1.6 x 10^-19 joules.
  • The unit of capacitance is the Farad (F).
  • The SI unit of electric current is the Ampere (A).
  • The unit of resistance is the Ohm (Ω).
  • The SI unit of luminous intensity is the Candela (cd).
  • The unit of luminous flux is the Lumen (lm).
  • One horsepower is equivalent to 746 watts.
  • Sound intensity is measured in decibels (dB).

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