The gravitational acceleration on a planet's surface is 16.0 m/s2. What is the gravitational acceleration at an altitude of one planet diameter above the SURFACE of the planet?

A) 5.33 m/s2 B) 1.78 m/s2 C) 1.60 m/s2 D) 4.00 m/s2 E) 8.00 m/s2 A) 5.33 m/s2 B) 1.78 m/s2 C) 1.60 m/s2 D) 4.00 m/s2 E) 8.00 m/s2

Each plate of a parallel-plate air-filled capacitor has an area of 0.0020 m2,and the separation of the plates is 0.020 mm.An electric field of 3.9 × 106 V/m is present between the plates.What is the surface charge density on the plates? (ε0 = 8.85 × 10-12 C2/N • m2)

A) 35 µC/m2 B) 73 µC/m2 C) 17 µC/m2 D) 52 µC/m2 E) 87 µC/m2 A) 35 µC/m2 B) 73 µC/m2 C) 17 µC/m2 D) 52 µC/m2 E) 87 µC/m2

Exam 1: A: Foundations

Two +6.0-μC point charges are placed at the corners of the base of an equilateral triangle,as shown in the figure.(k = 1/4πε₀ = 8.99 × 10⁹ N • m²/C²)At the vertex,P,of the triangle (a)what is the electric potential (relative to infinity)due to these charges? (b)what is the magnitude of the electric field due to these charges?

(Short Answer)

4.8/5

(38)

Question 41

A 0.25 kg ideal harmonic oscillator has a total mechanical energy of 4.0 J.If the oscillation amplitude is 20.0 cm,what is the oscillation frequency?

(Multiple Choice)

4.9/5

(43)

Question 42

A nonrelativistic electron has a kinetic energy of 5.4 eV.What is the energy of a photon whose wavelength is the same as the de Broglie wavelength of the electron? (m_el = 9.11 × 10^-31 kg, C = 3.00 × 10⁸ m/s,1 eV = 1.60 × 10^-19 J)

(Multiple Choice)

4.8/5

(45)

Question 43

A series LRC circuit consists of a 12.0-mH inductor,a 15.0-µF capacitor,a resistor,and a 110-V (rms)ac voltage source.If the impedance of this circuit is 45.0 Ω at resonance,what is its impedance at a frequency twice the resonance frequency?

(Short Answer)

4.7/5

(44)

Question 44

The figure shows an arrangement of two -4.5 nC charges,each separated by 5.0 mm from a proton.If the two negative charges are held fixed at their locations and the proton is given an initial velocity v as shown in the figure,what is the minimum initial speed v that the proton needs to totally escape from the negative charges? (k = 1/4πε₀ = 8.99 × 10⁹ N • m²/C²,e = 1.60 × 10^-19 C,m_proton= 1.67 × 10^-27 kg)

(Multiple Choice)

4.7/5

(43)

Question 45

Three objects are connected by massless wires over a massless frictionless pulley as shown in the figure.The tension in the wire connecting the 10.0-kg and 15.0-kg objects is measured to be 133 N.What is the mass M?

(Multiple Choice)

4.7/5

(36)

Question 46

Monochromatic light strikes a metal surface and electrons are ejected from the metal.If the intensity of the light is increased,what will happen to the ejection rate and maximum energy of the electrons?

(Multiple Choice)

4.9/5

(36)

Question 47

If the magnetic field of an electromagnetic wave is in the +x-direction and the electric field of the wave is in the +y-direction,the wave is traveling in the

(Multiple Choice)

4.9/5

(39)

Question 48

Spaceman Speff orbits spherical asteroid X with his spaceship.To remain in a circular orbit at 421 km from the asteroid's center,he should maintain a speed of 80 m/s. What is the mass of planet X? (G = 6.67 × 10^-11 N • m²/kg²)

(Multiple Choice)

4.7/5

(43)

Question 49

A nonuniform electric field is directed along the x-axis at all points in space.This magnitude of the field varies with x,but not with respect to y or z.The axis of a cylindrical surface,0.80 m long and 0.20 m in diameter,is aligned parallel to the x-axis,as shown in the figure.The electric fields E₁ and E₂,at the ends of the cylindrical surface,have magnitudes of 9000 N/C and 5000 N/C respectively,and are directed as shown.(ε₀ = 8.85 × 10^-12 C²/N • m²)The charge enclosed by the cylindrical surface is closest to

(Multiple Choice)

4.8/5

(31)

Question 50

As a spaceship is moving toward Earth,an Earthling measures its length to be 325 m,while the captain on board radios that her spaceship's length is 1150 m.(c = 3.00 × 10⁸ m/s) (a)How fast is the rocket moving relative to Earth? (b)What is the TOTAL energy of a 75.0-kg crewman as measured by (i)the captain in the rocket and (ii)the Earthling?

(Essay)

4.9/5

(45)

Question 51

A series LRC circuit has a sinusoidal voltage supplied to it at 197 kHz with a peak voltage of 270 V,a 41-kΩ resistance,a 14-µF capacitor,and a 63-H inductance.What is the peak current for this circuit?

(Multiple Choice)

4.8/5

(46)

Question 52

An 800-kHz radio signal is detected at a point 2.7 km distant from a transmitter tower.The electric field amplitude of the signal at that point is 0.36 V/m.Assume that the signal power is radiated uniformly in all directions and that radio waves incident upon the ground are completely absorbed.What is the intensity of the radio signal at that point? (c = 3.00 × 10⁸ m/s,μ₀ = 4π × 10^-7 T • m/A, Ε₀ = 8.85 × 10^-12 C²/N ∙ m²)

(Multiple Choice)

4.9/5

(35)

Question 53

When a weight W is hanging from a light vertical string,the speed of pulses on the string is V.If a second weight W is added without stretching the string,the speed of pulses on this string will now become

(Multiple Choice)

4.8/5

(38)

Question 54

The gravitational acceleration on a planet's surface is 16.0 m/s². What is the gravitational acceleration at an altitude of one planet diameter above the SURFACE of the planet?

(Multiple Choice)

4.9/5

(36)

Question 55

During a nuclear reaction,1.7 × 10^-4 J of energy is released. What is the resulting change in mass of the particles involved? (c = 3.00 × 10⁸ m/s)

(Multiple Choice)

4.8/5

(35)

Question 56

Each plate of a parallel-plate air-filled capacitor has an area of 0.0020 m²,and the separation of the plates is 0.020 mm.An electric field of 3.9 × 10⁶ V/m is present between the plates.What is the surface charge density on the plates? (ε₀ = 8.85 × 10^-12 C²/N • m²)

(Multiple Choice)

4.7/5

(36)

Question 57

Under what condition is | - | = A + B?

(Multiple Choice)

4.8/5

(41)

Question 58

In the figure,which of the curves best represents the variation of wave speed as a function of tension for transverse waves on a stretched string?

(Multiple Choice)

4.9/5

(35)

Question 59

The coefficient of the restitution of an object is defined as the ratio of its outgoing to incoming speed when the object collides with a rigid surface.For an object with a coefficient of 0.78,what fraction of the object's kinetic energy is lost during a single collision?

(Multiple Choice)

4.9/5

(34)

Question 60

Showing 41 - 60 of 1480

Exam 1: A: Foundations

A 0.25 kg ideal harmonic oscillator has a total mechanical energy of 4.0 J.If the oscillation amplitude is 20.0 cm,what is the oscillation frequency?

A nonrelativistic electron has a kinetic energy of 5.4 eV.What is the energy of a photon whose wavelength is the same as the de Broglie wavelength of the electron? (mel = 9.11 × 10-31 kg, C = 3.00 × 108 m/s,1 eV = 1.60 × 10-19 J)

A series LRC circuit consists of a 12.0-mH inductor,a 15.0-µF capacitor,a resistor,and a 110-V (rms)ac voltage source.If the impedance of this circuit is 45.0 Ω at resonance,what is its impedance at a frequency twice the resonance frequency?

Three objects are connected by massless wires over a massless frictionless pulley as shown in the figure.The tension in the wire connecting the 10.0-kg and 15.0-kg objects is measured to be 133 N.What is the mass M?

Monochromatic light strikes a metal surface and electrons are ejected from the metal.If the intensity of the light is increased,what will happen to the ejection rate and maximum energy of the electrons?

If the magnetic field of an electromagnetic wave is in the +x-direction and the electric field of the wave is in the +y-direction,the wave is traveling in the

Spaceman Speff orbits spherical asteroid X with his spaceship.To remain in a circular orbit at 421 km from the asteroid's center,he should maintain a speed of 80 m/s. What is the mass of planet X? (G = 6.67 × 10-11 N • m2/kg2)

A series LRC circuit has a sinusoidal voltage supplied to it at 197 kHz with a peak voltage of 270 V,a 41-kΩ resistance,a 14-µF capacitor,and a 63-H inductance.What is the peak current for this circuit?

When a weight W is hanging from a light vertical string,the speed of pulses on the string is V.If a second weight W is added without stretching the string,the speed of pulses on this string will now become

The gravitational acceleration on a planet's surface is 16.0 m/s2. What is the gravitational acceleration at an altitude of one planet diameter above the SURFACE of the planet?

During a nuclear reaction,1.7 × 10-4 J of energy is released. What is the resulting change in mass of the particles involved? (c = 3.00 × 108 m/s)

Each plate of a parallel-plate air-filled capacitor has an area of 0.0020 m2,and the separation of the plates is 0.020 mm.An electric field of 3.9 × 106 V/m is present between the plates.What is the surface charge density on the plates? (ε0 = 8.85 × 10-12 C2/N • m2)

Under what condition is | - | = A + B?

In the figure,which of the curves best represents the variation of wave speed as a function of tension for transverse waves on a stretched string?

The coefficient of the restitution of an object is defined as the ratio of its outgoing to incoming speed when the object collides with a rigid surface.For an object with a coefficient of 0.78,what fraction of the object's kinetic energy is lost during a single collision?

Foundations

Motion in One Dimension

Acceleration

Momentum

Energy

Principle of Relativity

Interactions

Force

Work

Motion in a Plane

Motion in a Circle

Torque

Gravity

Special Relativity

Periodic Motion

Waves in One Dimension

Waves in Two and Three Dimensions

Fluids

Entropy

Energy Transferred Thermally

Degradation of Energy

Electric Interactions

The Electric Field

Gausss Law

Work and Energy in Electrostatics

Charge Separation and Storage

Magnetic Interactions

Magnetic Fields of Charged Particles in Motion

Changing Magnetic Fields

Changing Electric Fields

Electric Circuits

Electronics

Ray Optics

Wave and Particle Optics

Filters

A nonrelativistic electron has a kinetic energy of 5.4 eV.What is the energy of a photon whose wavelength is the same as the de Broglie wavelength of the electron? (m_el = 9.11 × 10^-31 kg, C = 3.00 × 10⁸ m/s,1 eV = 1.60 × 10^-19 J)

Spaceman Speff orbits spherical asteroid X with his spaceship.To remain in a circular orbit at 421 km from the asteroid's center,he should maintain a speed of 80 m/s. What is the mass of planet X? (G = 6.67 × 10^-11 N • m²/kg²)

The gravitational acceleration on a planet's surface is 16.0 m/s². What is the gravitational acceleration at an altitude of one planet diameter above the SURFACE of the planet?

During a nuclear reaction,1.7 × 10^-4 J of energy is released. What is the resulting change in mass of the particles involved? (c = 3.00 × 10⁸ m/s)

Each plate of a parallel-plate air-filled capacitor has an area of 0.0020 m²,and the separation of the plates is 0.020 mm.An electric field of 3.9 × 10⁶ V/m is present between the plates.What is the surface charge density on the plates? (ε₀ = 8.85 × 10^-12 C²/N • m²)