Science

PhysicsQ&A Library2- The electric potential at y =5 m is 100 V, and the electric potential at y=10 m is 170 V,assuming the field is uniform. The y component of the electric field in this region is:a) -14 N/Cb) 14 N/Cc) -28 N/Cd) 28 N/C 3- An electron in the beam of a typical dental x-ray machine has a kinetic energy 1.07* 10-14 J,this energy is equivalent to: (e = 1.6*10-19 C)a) 1.07* 10-14 eVb) 1.07* 1014 eVc) 6.69*10-4 eVd) 6.69*104 eVQuestion

2- The electric potential at y =5 m is 100 V, and the electric potential at y=10 m is 170 V,assuming the field is uniform. The y component of the electric field in this region is:

a) -14 N/C

b) 14 N/C

c) -28 N/C

d) 28 N/C

3- An electron in the beam of a typical dental x-ray machine has a kinetic energy 1.07* 10^{-14} J,this energy is equivalent to: (e = 1.6*10^{-19} C)

a) 1.07* 10^{-14} eV

b) 1.07* 10^{14} eV

c) 6.69*10^{-4} eV

d) 6.69*10^{4 }eV

Find answers to questions asked by students like you.

Q: Constants Periodic Table (Figure 1)The car shown in the figure has mass m (this includes the mass of...

A: Part (B)The car has total of 4 wheels, as mentioned in the question. Mass is uniformly distributed o...

Q: 25. Review. You can think of the work-kinetic energy theorem GP as a second theory of motion, parall...

A: a) Let the mass of the bullet be denoted by m.The initial and final velocity of the bullet be denote...

Q: A baseball player holds a 38.1 oz bat (weight 10.6 N) with one hand at the point 0 as shown in the f...

A: In equilibrium, the force exerted by player on bat must be equal to the weight of bat. Both forces a...

Q: (multiple choice) Which describe the direction of the electric field outside a flat plastic sheet wi...

A: The field vector points directly away from the surface.

Q: Concave mirror Experiment object height = 0.60m object distance = 3.00cm Radius of curvature = 4.0...

A: The relation between image distance, object distance and magnification (m) is:

Q: Physics Question

A: The moment of inertia about the point of contact is,The torque exerted on the cylinder is,

Q: In the Bohr model of the hydrogen atom, the speed of the electron is approximately 2.15 × 106 m/s. F...

A: The force acting on the electron is

Q: In the circuit shown in the figure below R1 = 3.8 Ω, R2 = 6.2 Ω, R3 = 2.9 Ω, I1 = 3.3 A, I2 = 5.1 A ...

A: The figure given below shows the preferred direction of the Kirchhoff’s voltage Law,

Q: A pair of forces with equal magnitudes, opposite directions, and different line of action is called ...

A: The net torque will be zero under the equilibrium condition

Q: a car of mass M traveling at velocity v1 to the right strikes a wall and bounces back with a velocit...

A: a)The impulse and the average force on the car is,

Q: You have two strings of length 0.5 m. Both strings are fixed at both ends and have tension 10 N. The...

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and s...

Q: A mass hanging from a vertical spring is somewhat more complicated than a mass attached to a horizon...

A: 1.Equilibrium position of the oscillations will be the one where initially the system was at rest th...

Q: 19

A: Click to see the answer

Q: In introductory physics laboratories, a typicalCavendish balance for measuring the gravitational con...

A: Gravitational force between two objects is,

Q: 1 of 1 Previous Answers Request Answer Submit Incorrect; Try Again; 9 attempts remaining Part D Whic...

A: Using the conservation of energy, The spring potential energy = potential energy gained a...

Q: A 7.1 kg mass on a frictionless inclined surfaceis connected to a 2.4 kg mass. The pulley ismassless...

A: Assuming to θ be the angle of the incline, for the 7.1 kg mass, the equation of motion is,

Q: 5. A car with 0.260-meter radius tires travels 80,000 km before wearing them out. How many revolutio...

A: If the tires make N number of revolution, we have,

Q: In the figure provided, a crate of mass m sits at rest on a 20° ramp and is connected to another cra...

A: When the mass is slightly nudged, acceleration is zero.The value of the attached mass is,

Q: Give the temperature at the center of the sun (1.55×107K) in units of celsius and fahrenheit.

A: Given,

Q: A 4.4-kg block is pushed 3.5 m up a vertical wall with constant speed by a constant force of magnitu...

A: Given information:Mass of the block (m) = 4.4 kgCoefficient of friction between the block and the wa...

Q: What methods of heat transfer move the heat produced by an electric space heater? ( Conduction,Conve...

A: The heat transferred through the substance or space in three ways. Conduction, convection and radiat...

Q: (multiple choice) Charge Q is distributed uniformly throughout a spherical insulating shell. The net...

A: The net flux on the outer surface of the shell is Q/ε0.

Q: A system of point charges include q1= +1HC, at x1-1m, y1= 1m, q2= -1 HC at x2= -1, y2 q3= +2 at the ...

A: Total electric potential at point (1 m, 1 m) is,

Q: A boy throws a ball at an initial velocity of 26 m/s at an angle of 20° above the horizontal. How hi...

A: At the initial time only the vertical component of initial velocity is exist.so the velocity at init...

Q: In answering the questions in this problem, assume that the molecules in air (mainly N2 and O2) have...

A: Consider the mass of one mole of air be m, the temperature of air in hot summer be Ts, the temperatu...

Q: A bullet of mass m = 8.00 g is fired into a block of mass M = 190 g that is initially at rest at the...

A: Given:Mass of the bullet, m = 8 gMass of the gun, M = 190 gHeight of the table, h = 1 mLanding dista...

Q: The 10 kg mass has a velocity of 13 m/s at position 1 before coming to rest at position 2 a distance...

A: figure shows the given free body diagram.

Q: What would be the acceleration of gravity (in m/s2) at the surface of a world with three times Earth...

A: LetMass of the earth is MeRadius of the earth is ReMass of the surface of a world is MwRadius of the...

Q: 12. QCA block of mass 3.00 kg is pushed up against a wall by a force P that makes an angle of 0 50.0...

A: (a)Write the equilibrium condition for the vertical direction of force.Write the equilibrium conditi...

Q: 4- An electron in an x-ray machine is accelerated through a potential difference of 5*104 V before i...

A: 4. Change in electric potential energy is,

Q: 13 Two forces act concurrently on an object. The magnitude of the resultant will be greatest when th...

A: Let us assume the magnitude of the two forces acting from the same point (concurrent) be equal i.e.

Q: Choose the correct answer (Electric potential) - The electric potential at x =3 m is 120 V, and the ...

A: Magnitude of electric field is,

Q: 13. o Laht aters curved side ot a Semi-cylindrical dish ot water alng a radius hne at an anle of -25...

A: Given:Angle of incidence = 25οRefractive index if water, n = 1.333

Q: An initially 'compressed' spring (x1 = 0.4m) is observed to compress an additional 0.4 m before stop...

A: Given information:Mass of the block (m) = 100 kgVelocity of the block (v) = 26 m/sInitial compressio...

Q: Two very long wires are parallel to each other separated by a distance d. The same current flows th...

A: Given:Current in the wire, I = 1 ampLength of the wire, d = 0.1 m

Q: 9. A particle is subject to a force F, that varies with position V as shown in Figure P7.9. Find the...

A: Work done is equal to area under force Vs displacement curve.Part A :Work done from x = 0 to x = 5

Q: An observant fan at a baseball game notices that the radio commentators have lowered a microphone fr...

A: Write the expression for time period of one oscillation

Q: What would be the acceleration of gravity (in m/s2) at the surface of a world with three times Earth...

A: Here, the gravitational constant is given by G and R is the radius of earth and Me is the mass of th...

Q: A thin rod has a length of 0.106 m and rotates in a circle on a frictionless tabletop. The axis is p...

A: the final moment of inertia of the system is

Q: (Multiple choice) An electron volt is (explain why that answer is correct): a. the force required to...

A: Joule is the SI unit of energy. However, joule is a large unit for measurements corresponding to ele...

Q: Chapter 10, Problem 023 A flywheel with a diameter of 1.73 m is rotating at an angular speed of 268 ...

A: Hello. Since your question has multiple sub-parts, we will solve first three sub-parts for you. If y...

Q: Week 5 Fall 2019 Two person race with acceleration and deceleration 14 of 15 IReview | Constants Mar...

A: Given:Speed of Mary = 4 m/sSpeed of sally = 5 m/sDistance of Sally from finish line = 22-5 = 17 mDis...

Q: A bullet of mass m1 = 10.00 g that has a velocity of v1 in the horizontal direction hits and gets fu...

A: The total momentum of the system must be conserved. The initial momentum of the system is equal to t...

Q: What is the Froude number given the following?

A: Write an expression for Froude number

Q: A 4.0-g bullet leaves the muzzle of a rifle with a speed of 324 m/s. What force (assumed constant) i...

A: Given:Initial speed of the bullet = 0Final speed of the bullet = 324 m/sDistance covered by the bull...

Q: 4. A charged metal sphere of radius a is surrounded by a conductor of inner radius b. The center sph...

A: (a)From Gauss law, the expression of the electric field between the cavity of the sphere is:

Q: ST.8 Imagine that an external force of 100 N must be applied to keep a bicycle and rider moving at a...

A: Given,

Q: A uniform horizontal shelf of width L and mass m is held to a wall by a frictionless hinge and by a ...

A: Click to see the answer

Q: 6 The dagram belaw repesentb a light ay reHlecting fram a plane miner Normal ught 0 10 70 ao TTTTI P...

A: According to the law of reflectionAngle of incidence is equal to the angle of reflection. And both t...

Q: A person exerts a horizontal force of 80 N on the end of a door 78 cmwide. What is the magnitude of ...

A: (a) The torque is given by