Two 2.0-g aluminum foil balls hang from 1.0-m-long threads that are suspended from the same point at the top. The charge on each ball is +4.0×10^−9C. a) Determine the angle between the threads. Assume the gravitational force is much greater than the electrostatic force. b) Determine the tension force exerted by the string.

Q: THE PLATES OF A PARALLEL PLATE CAPACITOR ARE MAINTAINED WITH CONSTANT POTENTIAL BY A BATTERY AS THEY…

A:

Q: For the velocity VS. time graph, shown below, what is the object's velocity (in m/s) at 4 sec?…

A: Given data:  The velocity vs time graph Required: The object's velocity at t = 4 s

Q: A mercury thermometer is used to take three temperatures of a cup of water that was supposed to be…

A: Given Data:  True value of temperature of cup of water TT=46° C Measured value of temperature of cup…

Q: Two small balls with a mass of 2 g each are hanging on two separate strings 0.5 m (50 cm) long…

A:

Q: A battery with an internal resistance of 1.5 ohms  is connected in series with resistors R1 = 3 ohms…

A: Given data:  Internal resistance (r) = 1.5 Ω The battery is connected in series with two resistors…

Q: E C+ /60° A B The electric flux through the rectangular surface shown is 12 Nm^2/C. A = 10 cm and B…

A:

Q: A laser produces 22.0 mW of light. In 4.00 hr, the laser emits 7.08×10^20 photons.What is the…

A:

Q: At rest hydrogen has a spectral line at 149nm. If this line is observed at 144nm for the star…

A: Given:hydrogen spectral line at rest, λs = 149 nmobserved spectral line, λ = 144 nmAsked:What is the…

Q: An AC circuit consists of a 220 resistance and a 0.7 H choke. Find the power absorbed from 220 V and…

A:

Q: Solve all the following problems MATHEMATICALLY using your calculator. Show all work. Remember, the…

A:

Q: This problem checks your understanding of the term in the equation for the electric field due to a…

A: Given:-  We have given that the charged particle at a point s ( 10 m,10 m,7 m )  We would like to…

Q: As a laudably skeptical physics student, you want to test Coulomb's law. For this purpose, you set…

A:

Q: Consider the following kinematics equation: V=V² + 2ax where V, and V are both representative of…

A: Write the provided kinematic equation and substitute all the required values to determine the unit…

Q: 4) If you take Torricelli's barometer to the surface of Mars, what will L (height of the mercury…

A: The acceleration due to gravity on Mars surface is 3.7 m/s^2 .  Atmospheric pressure on Mars = 6.518…

Q: What is the extra step that indirect systems use in this process ?

A: It is true that both Direct and Indirect TFT systems covert X-Rays to a visible image. But there is…

Q: While riding in a hot air balloon, which is steadily descending at a speed of 2.83 m/s, you…

A: CONCEPT: From kinematics equation we know,                              v=u+at And,…

Q: (a) Replace the force system acting on the post by a resultant force and (b) couple moment at point…

A:

Q: A proton is initially at rest. After some time, a uniform electric field is turned on and the proton…

A:

Q: A car with an unknown initial velocity decelerates over the course of 6.00 s to a velocity of 15.0…

A:

Q: Part A - Which of the following is not true? In a region with no charges, Maxwell's equations take a…

A:

Q: A stationary block has a charge of +6.0×10^−8 C. A 0.80-kg cart with a charge of +4.0×10^−8 C is…

A:

Q: Wings on race cars push them into the track. The increased normal force makes large friction forces…

A:

Q: a car moves 50m in 9.5s while smoothly slowing to a final speed of 3.8 m/s. Find a) the original…

A: Solution:- Given that the car moves 60 m in 9.5 second. Thus  (A) Using 4th equation…

Q: We have an electric flux of magnitude 141 Nm2/ C passing through a flat horizontal surface with an…

A:

Q: As shown in the figure below, a solid insulating sphere of radius a = 5.00 cm carries a net positive…

A:

Q: Liz rushes down onto a subway platform to find her train already departing. She stops and watches…

A:

Q: The 50-N sphere and 150-N block is placed in a smooth vertical and inclined surface with contact…

A:

Q: 1. The average distance between Earth and the Sun is 1.5 × 108 km. (a) Calculate the average speed…

A: Given Distance between earth and the sun = r = 1.5 × 108 km We have to calculate (a) the average…

Q: A 5.0-m-diameter merry-go-round is turning with a 4.0 s period. What is the speed of a child on the…

A:

Q: An object moves with constant acceleration 4.80 m/s² and over a time interval reaches a final…

A:

Q: Three charged marbles, labeled 91, 92, and 93, are oriented such that 92 is between 9₁ and 93. The…

A:

Q: A ball is thrown vertically upward with a speed of 34.0 m/s. (a) How high does it rise? m (b) How…

A:

Q: Multiple Concept Example 9 provides background pertinent to this problem. The magnitudes of the four…

A: Given that: A=18.0 mB=11.0 mC=12.0 mD=28.0 m

Q: You throw a baseball directly upward at time t = 0 at an initial speed of 14.1 m/s. What is the…

A:

Q: A block of mass m₁ = 3.32 kg on a frictionless plane inclined at angle 0 = 34.6° is connected by a…

A: Given Mass of the two blocks are given as m1=3.32 kg and m2=2.43 kg Angle of inclination of the…

Q: The graph below plots velocity vs. time for an object moving along a straight path. v (m/s) 16 12- 8…

A: Given data is in the graph,

Q: Which of the following shows a position graph for a person with a positive initial velocity, and a…

A: to identify : the position time graph for a person having positive initial velocity and positive…

Q: Identify the speed of a person standing on the equator, due to the earth's rotation.

A: Given thv radius of the earh is 6.4 x106 m.

Q: 3. (a) Determine the horizontal and vertical components of the 940 lb force. (b) The components of…

A:

Q: 1. The electric charge on a particular object is found to be +1.00 nC. Have electrons been added or…

A:

Q: _|F| = = 191921 Απερ ma This problem checks that you can correctly apply Coulomb's law for point…

A: Given data:  Distance between charges (r) = 7 cm = 0.07 m Charge (q1) = 2 nC = 2×10-9 C Charge (q2)…

Q: About: Lorentz Law Required: • history of person who discovered it • definition and uses •…

A: History of person who discovered it: We know that every charge experiences force when it is under…

Q: A small metal ball with positive charge q and mass m is attached to a very light string, as shown in…

A:

Q: What is the ball's speed v₁ after 2.00 s? What is the ball's speed v₂ after 4.00 s? What is the…

A:

Q: Two small balls with a mass of 2 g each are hanging on two separate strings 0.5  m (50 cm)  long…

A: according to given data

Q: Compare the force of one proton on another for electric and for gravitational forces.  Both force…

A: To compare the force of one proton on another for electric and gravitational forces. Here: Mass of…

Q: 108 Cal to kilowatt-hours E = 2 kWh

A: Given data:  Energy (E) = 108 cal Required: Energy in kWh

Q: Use the worked example above to help you solve this problem. (a) Find the horizontal and vertical…

A:

Q: A VAN IS TRYING TO PULL ANOTHER CAR OUT OF A DITCH. BOTH VEHICLES CANNOT MOVE. 21 2070A942 341 Q: A…

A: Well! Your question has been noted.  In 1st try, VAN is not able to move the CAR from the ditch…

Q: A POINT CHARGE WAS LOCATED AT THE CENTER OF A SPHERICAL GAUSSIAN SURFACE. THE NET ELECTRIC FLUX WILL…

A:

Electric Charges and Fields

One of the fundamental properties is the electromagnetic property. Charge cannot be destroyed by any process and this contributes formally to the law of charge conservation.