## Newton's law

Newton's law

Newton's law

##### What is the mass of a single proton in kilograms?
1. [ ] 1.67 x 10^-27 kg
2. [ ] 9.11 x 10^-31 kg
3. [x] 1.67 x 10^-24 kg
4. [ ] 1.01 x 10^-26 kg
##### What is the speed of light in a vacuum in meters per second?
1. [x] 299,792,458 m/s
2. [ ] 3 x 10^8 m/s
3. [ ] 2.997 x 10^8 m/s
4. [ ] 300,000,000 m/s
##### What is the formula for calculating potential energy in a conservative force field?
1. [ ] PE = mgh
2. [x] PE = mgh
3. [ ] PE = 1/2 mv^2
4. [ ] PE = Fd
##### What is the force of gravity between two objects in a vacuum?
1. [ ] F = G\*(m1^2)\*(m2^2)
2. [x] F = G\*(m1*m2)/r^2
3. [ ] F = G\*(m1*m2)
4. [ ] F = G*m1/r^2
##### What is the frequency range of radio waves in hertz?
1. [ ] 10^3 to 10^6 Hz
2. [ ] 10^6 to 10^9 Hz
3. [x] 10^4 to 10^11 Hz
4. [ ] 10^11 to 10^15 Hz
##### What is the wavelength of microwaves in meters?
1. [ ] 10^-2 to 10^-4 m
2. [ ] 10^-6 to 10^-2 m
3. [x] 10^-3 to 10^-1 m
4. [ ] 10^-1 to 1 m
##### What is the resistance of a perfect conductor in ohms?
1. [ ] 0
2. [x] 0
3. [ ] ∞
4. [ ] 1
##### What is the amount of heat required to raise the temperature of one gram of water by one degree Celsius?
1. [x] 4.184 J/g°C
2. [ ] 1 J/g°C
3. [ ] 4184 J/g°C
4. [ ] 0.4184 J/g°C
##### What is the amount of energy released during a nuclear fission reaction of one mole of uranium-235?
1. [ ] 0.15 MeV
2. [ ] 200 MeV
3. [x] 200 MeV
4. [ ] 2 MeV
##### What is the boiling point of water in degrees Celsius at standard atmospheric pressure?
1. [x] 100°C
2. [ ] 0°C
3. [ ] 373 K
4. [ ] 273 K
##### What is the acceleration of gravity near the surface of the Earth in meters per second squared?
1. [ ] 10 m/s^2
2. [x] 9.81 m/s^2
3. [ ] 9.8 m/s^2
4. [ ] 1 m/s^2
##### What is the unit of pressure in the SI system of units?
1. [ ] N
2. [ ] N/m
3. [x] Pa
4. [ ] J
##### What is the angle between a magnetic field and a conductor experiencing a maximum force?
1. [ ] 90°
2. [ ] 45°
3. [x] 90°
4. [ ] 0°
##### What is the voltage across a capacitor in a DC circuit after a long time?
1. [x] 0 V
2. [ ] V\_initial
3. [ ] V\_initial/2
4. [ ] V\_initial \* e^(-t/RC)
##### What is the maximum theoretical efficiency of a Carnot engine operating between two temperatures?
1. [x] 1 - (T2/T1)
2. [ ] (T2/T1)
3. [ ] (T1/T2)
4. [ ] 1 - (T1/T2)
##### What is the entropy change of a perfect gas during an isothermal process in which the volume doubles?
1. [ ] -nR ln(2)
2. [x] nR ln(2)
3. [ ] 0
4. [ ] -2nR
##### What is the energy of an electron in the hydrogen atom in the ground state?
1. [x] -13.6 eV
2. [ ] 13.6 eV
3. [ ] -0.5 eV
4. [ ] 0.5 eV
##### What is the momentum of a photon with a wavelength of 500 nm?
1. [ ] 7.06 x 10^-25 kg m/s
2. [x] 6.63 x 10^-34 kg m/s
3. [ ] 6.63 x 10^-25 kg m/s
4. [ ] 7.06 x 10^-34 kg m/s
##### What is the period of a simple pendulum with a length of 1 m and an angular amplitude of 5°?
1. [x] 2.01 s
2. [ ] 2.00 s
3. [ ] 2.03 s
4. [ ] 2.02 s
##### What is the color of light with a wavelength of 450 nm?
1. [x] Blue
2. [ ] Red
3. [ ] Green
4. [ ] Yellow
##### What is the temperature at which water has its maximum density?
1. [x] 4°C
2. [ ] 0°C
3. [ ] 100°C
4. [ ] 10°C
##### What is the angle of incidence at which light is totally internally reflected at the interface between two media with different refractive indices?
1. [ ] 60°
2. [x] 45°
3. [ ] 90°
4. [ ] 30°
##### What is the force required to accelerate a 10 kg object at 5 m/s^2?
1. [x] 50 N
2. [ ] 10 N
3. [ ] 5 N
4. [ ] 25 N
##### What is the work done by a constant force with a magnitude of 10 N over a displacement of 2 m in the direction of the force?
1. [x] 20 J
2. [ ] 10 J
3. [ ] 5 J
4. [ ] 0 J
##### What is the electrical resistance of a wire with a length of 5 m, a cross-sectional area of 2 mm^2, and a resistivity of 1.7 x 10^-8 Ωm?
1. [x] 0.0175 Ω
2. [ ] 17.5 Ω
3. [ ] 1.75 Ω
4. [ ] 175 Ω
##### What is the electric field of a parallel-plate capacitor with a voltage difference of 10 V and a plate separation of 1 mm?
1. [x] 10^6 V/m
2. [ ] 10^3 V/m
3. [ ] 10^2 V/m
4. [ ] 10 V/m
##### What is the magnetic field strength of a solenoid with 500 turns per meter and a current of 2 A?
1. [ ] 1 T
2. [ ] 10^-2 T
3. [x] 10^-3 T
4. [ ] 0.1 T
##### What is the power dissipated by a resistor with a resistance of 2 Ω in a circuit with a voltage of 10 V and a current of 2 A?
1. [x] 20 W
2. [ ] 40 W
3. [ ] 10 W
4. [ ] 5 W
##### What is the wavelength of an X-ray photon with an energy of 10 keV?
1. [ ] 1.24 x 10^-9 m
2. [x] 1.24 x 10^-11 m
3. [ ] 1.24 x 10^-7 m
4. [ ] 1.24 x 10^-13 m
##### What is the time it takes for light to travel from the Sun to the Earth, which are separated by a distance of approximately 1 astronomical unit (AU)?
1. [x] 8.33 minutes
2. [ ] 4.22 minutes
3. [ ] 16.67 minutes
4. [ ] 24.99 minutes
##### What is the velocity of a particle with a de Broglie wavelength of 500 nm?
1. [x] 6.63 x 10^3 m/s
2. [ ] 6.63 x 10^-3 m/s
3. [ ] 6.63 x 10^-2 m/s
4. [ ] 6.63 x 10^-4 m/s
##### What is the specific heat capacity of water at constant pressure in J/g°C?
1. [ ] 4.2 J/g°C
2. [ ] 42 J/g°C
3. [x] 4.184 J/g°C
4. [ ] 0.4184 J/g°C
##### What is the coefficient of thermal expansion of aluminum in K^-1?
1. [ ] 2.3 x 10^-5 K^-1
2. [ ] 1.2 x 10^-5 K^-1
3. [x] 2.4 x 10^-5 K^-1
4. [ ] 3.6 x 10^-5 K^-1
##### What is the tensile strength of steel in MPa?
1. [x] 250 MPa to 1000 MPa
2. [ ] 25 MPa to 100 MPa
3. [ ] 2500 MPa to 10,000 MPa
4. [ ] 2.5 MPa to 10 MPa
##### What is the Rydberg constant in m^-1?
1. [x] 1.097 x 10^7 m^-1
2. [ ] 1.097 x 10^5 m^-1
3. [ ] 1.097 x 10^-7 m^-1
4. [ ] 1.097 x 10^3 m^-1
##### What is the mass of a neutron in kg?
1. [x] 1.67 x 10^-27 kg
2. [ ] 1.67 x 10^-24 kg
3. [ ] 1.67 x 10^-30 kg
4. [ ] 1.67 x 10^-21 kg
##### What is the work function of cesium in eV?
1. [x] 2.14 eV
2. [ ] 4.28 eV
3. [ ] 1.09 eV
4. [ ] 0.53 eV
##### What is the Poynting vector in electromagnetism?
1. [ ] The electric field
2. [x] The cross product of the electric and magnetic fields
3. [ ] The magnetic field
4. [ ] The product of the permittivity and permeability of free space
##### What is the formula for centripetal acceleration in SI units?
1. [ ] a = v^2/r
2. [x] a = v^2/r
3. [ ] a = v/r
4. [ ] a = r/v
##### What is the charge-to-mass ratio of an electron in C/kg?
1. [ ] 1.76 x 10^11 C/kg
2. [ ] 1.76 x 10^-11 C/kg
3. [x] -1.76 x 10^11 C/kg
4. [ ] 1.76 x 10^-12 C/kg
##### What is the Compton wavelength of an electron in m?
1. [x] 2.43 x 10^-12 m
2. [ ] 2.43 x 10^-15 m
3. [ ] 2.43 x 10^-18 m
4. [ ] 2.43 x 10^-9 m
##### What is the critical angle for total internal reflection at a glass-air interface for light with a wavelength of 500 nm, given a refractive index of glass of 1.5?
1. [ ] 26.6°
2. [ ] 45.8°
3. [x] 41.8°
4. [ ] 33.8°
##### What is the mass of a silver atom in kg?
1. [x] 1.79 x 10^-25 kg
2. [ ] 1.79 x 10^-22 kg
3. [ ] 1.79 x 10^-28 kg
4. [ ] 1.79 x 10^-31 kg
##### What is the gravitational constant in N(m/kg)^2?
1. [x] 6.674 x 10^-11 N(m/kg)^2
2. [ ] 6.674 x 10^-14 N(m/kg)^2
3. [ ] 6.674 x 10^-18 N(m/kg)^2
4. [ ] 6.674 x 10^-15 N(m/kg)^2
##### What is the volume of a cube with a side length of 3 m in m^3?
1. [x] 27 m^3
2. [ ] 3 m^3
3. [ ] 6 m^3
4. [ ] 9 m^3

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