The work function of gold is 4.58 eV. What frequency of light must be used to eject electrons from a gold surface with a maximum kinetic energy of 6.48 x 10^-19 J?

Q: QUESTION 1 The NHRA top-fuel dragster speed record is 151 m/s reached by accelerating from zero over...

A: V2 - U2 = 2as V is the final velocity U is the initial velocity a is the acceleration s is the dista...

Q: A ball whose momentum is p⃗ p→ strikes a wall and bounces off with the speed. The change in the ball...

A: Initial momentum of the ball = p→After striking a wall, the ball bounces off with the same speed.  

Q: 2. The magnitude of the applied force F = 80 N, mass M = 5 kg, and 0 = 40° are the same for the two ...

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Q: 4. In the high jump, the kinetic energy of an athlete is transformed into gravitational potential en...

A: Part (4): Given: The lifting of the center of mass from the ground is 2.1 m. The final speed of the ...

Q: Refer to the table below; Calculate the percentage difference of the mass of proton from neutron. (W...

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Q: A freezer that is never turned off draws an average current of 2.5 A when it is plugged into a 115 V...

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Q: Assuming stars to behave as black bodies stefan-boltzmann law to show that the luminosity of a star ...

A: Flux is the amount of light that comes from a certain area (usually one square meter) in a certain a...

Q: Select all that is/are true about the motion of the particle described in the graph below.

A: correct options Decelerate in DE at 10m/s2 Accelerate in ab at 10 m/s2 dwell at BC   SPEED = DISTANC...

Q: Does amplitude play a factor in wave SPEED? Explain your answer.

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Q: Part A Two tugboats pull a disabled supertanker. Each tug exerts a constant force of 1.4×106 N, one ...

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Q: A hollow cylinder (hoop) is rolling on a horizontal surface at speed v 3.0 m/s when it reaches a 15 ...

A: Given: initial linear velocity v =3.0 m/s angle of inclination θ=15°  

Q: 10. A square loop of wire of side 2.3 cm 2.3 cm and electrical resis- tance 79 Q is near a 2.3 cm lo...

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Q: How much work does it take to stretch the spring 0.4 m?

A: If a spring is compressed by a length x by the force F then by Hooke's law                          ...

Q: A parallel-plate capacitor in which the plates are separated by a distance, d, contains a uniform el...

A: Since, E = V/d  => V = Ed

Q: 100 m 450 45 m 30 m A skier starts at rest on the frictionless slope shown, 100 m above ground level...

A: Given Motion start by skier from 100 m height as shown in the figure. All surfaces are smooth. We ha...

Q: A 710 kg car is moving on level ground at a constant speed of 23 m/s. It is subject to a drag force ...

A: Given data:  Force (F) = 500 N Speed (v) = 23 m/s Required: The power (P) 

Q: Can you please solve this asappp

A: Exert a quick on 20gram of ice along horizontal on inclined plane.

Q: A ball is projected upward with an initial speed of approximately 30 m/s. The diagram at the right r...

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Q: Also called as undoped semiconductor. Olntrinsic materials Extrinsic materials Impurities O Semicond...

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Q: A ceiling fan consists of a small cylindrical disk with 5 thin rods coming from the center. The disk...

A: Solution: Given: m1 = mass of disk = 2.7 kg r = radius of disk = 0.25 m L = length of rod = 0.86 m m...

Q: Mark throws a ball upward. His hands moved by 0.21 m and the ball moves upward. Determine the magnit...

A: Given data:  Height (h) = 0.21 m Work (W) = 31.08 J Required: The magnitude of the force (F) 

Q: A train is 300 m long runs at 60 m/s. Find the time ?

A: Given data :          Speed  =  S       Distance  =  D        To find :             Time

Q: Three equal resistors (R) are connected to a battery as shown in (Figure 1). If the emf of the batte...

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Q: a 57.05kg person jumps on the ground from a height of 1.55m. If he lands stiffly(with his knee joint...

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Q: When a switch ima. Circuits is closed, the light turns on. Explain why this happens.

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Q: The density of a certain liquid is given by the equation of the following form: ρ = (A + Bt) e CP wh...

A: The density of a certain liquid is given by the equation of the followingform: ρ = (A + Bt) eCPwhere...

Q: A mass-spring system is oscillating in the horizontal direction. If the mass is 0.25-kg, the spring ...

A: Given data:  Spring constant (k) = 12 N/m Amplitude (A) = 0.15 m Required: The total energy of the s...

Q: A square wire with side a = 0.055 m is in a time-varying magnetic field with magnitude B(t) = At, wh...

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Q: A long solenoid (radius = 3.0 cm, 2500 turns per meter) carries a current given by | = 0.30 sin(200 ...

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Q: A baseball of mass m1 = 0.41 kg is thrown at another ball hanging from the ceiling by a length of st...

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Q: many meters o

A: Given P=150 kPa

Q: You put a mirror at the bottom of a 2.1-m-deep pool. A laser beam enters the water at 26 ° relative ...

A: Given:i=26°d=2.1 m   let laser beam come out at distance x from entry point

Q: Two identical metal spheres, X and Y, are supported on insulating stands. Sphere X is charged to Qx ...

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Q: QUESTION 8 What is the electric field strength in region 2 of the three, infinitely-large sheets of ...

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Q: A long solenoid has a diameter of 16.5 cm. When a current i exists in its windings, a uniform magnet...

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Q: A0.014-kg string is clamped at both ends. Its linear mass density is 0.029 kg/m. Under what tension ...

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Q: A proton moves with an unknown velocity through a magnetic field of 3.45 x 10-3 T that points direct...

A: Given: The magnetic field is 3.45x10-3 T due north. The magnetic force on the proton is 2.4x10-15 N ...

Q: A coil is wrapped with 239 turns of wire on the perimeter of a circular frame (radius = 9 cm). Each ...

A: Given Noumber of turn(N)= 239 Radius of circular frame (R)= 9cm Field changes at a constant rate fro...

Q: Since heat gained equals heat lost, then which of the following is true? the decrease in temper...

A: Given statement : heat gained equal heat lost

Q: A camera lens with a focal length of 250 mm focuses a real image on an image sensor 50 mm behind the...

A: We know that the lens formula is given as  1f= 1v-1u So f is the focal length of the lens v is the f...

Q: 11. A stone is thrown with a velocity of 30m/s pointed 36.87 degrees above the horizontal from the t...

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Q: When light with a frequency f1 = 547.5 THz illuminates a metal surface, the most energetic photoelec...

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Q: A tricycle moving at a constant speed of 12.2 m/s approaches towards a jeep that is initially at res...

A: Given: The constant speed of the tricycle is 12.2 m/s. The initial separation between vehicles is 47...

Q: A 40.0-cm diameter circular loop is rotated in a uniform electric field until the position of maximu...

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Q: If a light wave has a frequency of 800 MHz, then its wavelength is: O 375 nm O 0.375 m O 1.8x10° m O...

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Q: A train is 300 m long runs at 60 m/s. Find the time ?

A: Given: The length of the train: d = 300 m; The speed of the train: v = 60 m/s. To find the time.  

Q: ) Suppose a pendulum with length L (meters) has angle e (radians) from the vertical. It can be shown...

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Q: A disk with mass m = 9 kg and radius R = 0.37 m begins at rest and accelerates uniformly for t = 16....

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Q: Assuming that a cathode ray is a beam of charged particles, how could you demonstrate that these par...

A: Given Cathode ray is a beam of negative charge particle. We have to choose the correct option from g...

Q: Water flowing steadily at a rate of 0.17 m3/s is deflected downward by an angled elbow and exits to ...

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Compton effect

The incoming photons' energy must be in the range of an X-ray frequency to generate the Compton effect. The electron does not lose enough energy that reduces the wavelength of scattered photons towards the visible spectrum. As a result, with visible lights, the Compton effect is missing.

Recoil Velocity

The amount of backward thrust or force experienced by a person when he/she shoots a gun in the forward direction is called recoil velocity. This phenomenon always follows the law of conservation of linear momentum.