An object 24.0 cm from a concave mirror creates a virtual image at -33.5 cm. What is the focal length of the mirror? (Mind your minus signs.) (Unit = cm) %3D

Q: Which of the following increases the rotational inertia of a solid diet about its axis, without chan...

A: The moment of inertia of an object is given by I = mk2, where m = the mass of the object k = the rad...

Q: A 30 μF capacitor is connected to a 9.0 V battery. Calculate the charge on the capacitor.

A: Here given Capacitance (C) = 30 μF Voltage (V) = 9 v Charge on capacitor (Q) = ? Capacitance of capa...

Q: D A ray of light strikes a flat block of glass (n=1.58) of thickness D=2.6cm at an angle of 0=50° wi...

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Q: A person's left eye is corrected by a diverging le of f = -18.6 cm placed 2.0 cm from the eye. (a) I...

A: We know that the formula of the power of the lens is given as  P = 1f Here P is the power  f is the ...

Q: In nuclear fission, a nucleus splits roughly in half.  A. What is the potential 4.00 x 10-14 m from ...

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Q: he parallel plates of an air capacitor are separated by 3.25 mm. Each plate carries a charge of 6.50...

A: Given that                  Distance between plates d = 3.25 mm = 3.25×10-3 m                 Charge...

Q: When the distance between two stars decreases by 1/4, the force between them a. increases to 16 tim...

A: Required :  The change in the force between the stars.  

Q: 4. Point charges q, = +12 nC and q2 = -12 nC are 0.100 m apart. Compute the electric field caused by...

A: Electric field due to point charge E = KQ/r2 IIf two or more than two electric field acts at a poin...

Q: Calculate the magnitude of the deceleration of a snow boarder going up a 7.91° , slope assuming the ...

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Q: A jet engine releases 5000J of energy per cycle and performs 800 J of work A. How much heat is abs...

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Q: - An electric ceiling fan with blades 0.500 m in diameter is rotating about a fixed axis with an ini...

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Q: The electric power of a lamp that carries 2-A at 120-V is

A:  electric power = Current x  voltage   electric power of a lamp = (2A) x (120V)  electric power of a...

Q: An average electric field of magnitude 200 V/M exists between two plates separated by 5.0 cm. How la...

A: Given :  Magnitude of electric field, E = 200 V/m Separation between plates, d = 5 cm = 0.05 m We ha...

Q: Problem 8: Consider a bowling ball of mass M attached to two ropes. One rope is being pulled horizon...

A: Given Data: The figure given in the problem represents a bowling ball attached with two ropes having...

Q: The plastic rod of length L in the figure below has a non- uniform linear charge density A=cr?, wher...

A: In this question we have to find an expression for the magnitude and direction of the electric field...

Q: There are two 9.1kg identical balls of electrons which are 5m apart. What is the charge of each ball...

A: Given data: Here, m1 and m2 are the masses of balls and d is the distance between them.

Q: 16. A solenoid of length 0-20 m, having 120 turns carries a current of 2-5 A. Find the magnetic fiel...

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Q: When a piece of aluminum foil is taken out of the oven and cools from 100°C to 50°C. What is the cha...

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Q: There are two 9.1kg identical balls of electrons. How many electrons are there in the ball?

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Q: The tennis player strikes the ball at A with a horizontal velocity, and it just clears the net (pass...

A: Take left side as positive x axis. The equation of motion is x=vty=7.5-12gt2⇒y=7.5-12gxv2

Q: The 5 N block is sitting on a table top which weights 16 N. The table has three legs. The force exer...

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Q: A 97.5-kg man pushes a crate 4.5 m up along a ramp that makes an angle of 17.5° with the horizontal....

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Q: Two moles of an ideal gas occupy a volume V. The gas expands isothermally and reversibly to a volume...

A: Given  No of moles, n = 2  Initial Volume, V1 = V Final volume ,V2 = 3V  Isothermal expansion ,  Cha...

Q: A point charge of -7 mC experiences an intensity of 5.6 x10^-3 N/C. How far is the point charge from...

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Q: 16. A solenoid of length 0-20 m, having 120 turns carries a current of 2-5 A. Find the magnetic fiel...

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Q: Part (d) The upward force exerted by the ground on a police officer standing on a street corner The ...

A: According to Newton’s third law, if we exert some force on an object, that object will also exert th...

Q: Consider the circuit as shown in the diagram. Using the current directions set in the liagram, what ...

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Q: *S0.0°g metal ball having net charge Q = 5.50 µC is thrown out of a window horizontally north at a s...

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Q: Problem 11: A box rests on a rough horizontal surface. You apply a force, F, on the box at an angle,...

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Q: t³ – 6t° – The motion of a particle is defined by the relation x = 36t – 40, where x and t are expre...

A: (a) The equation for a particle's motion is given by, x=t3-6t2-36t-40  -----1   Obtain equation for ...

Q: 5. Point charges qi=10nC and q=13nC are 6.0m apart. Compute the electric field caused by q: and q2 a...

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Q: Two blocks are connected by a cord running over a pulley. Ignore the mass of the cord and pulley and...

A: According to Newton's second law F = ma  

Q: The nearest star to Earth is Proxima Centauri, which is 4.3 light years away. The spacecraft Potemki...

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Q: A 20 g bullet is fired horizontally onto a stationary 8 kg block of wood and sticks in it. The block...

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Q: The uncertainty (in mm) of any reading when using the odjacent vernier caliper is 0. 10 20 mm 0123 4...

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Q: Calculate the force on an alpha particle passing a gold atomic nucleus at a distance of 0.00300 A.

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Q: The force required to compress a non-standard spring as a function of displacement is given by the e...

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Q: The uniform solid block in the figure has mass 41.8 kg and edge lengths a = 0.842 m, b = 1.55 m, and...

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Q: the magnetic field lines of opposite pole for two bar magnets are similar to the electric field line...

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Q: Find the magnitude of the electric field at a point R/2 from the center if throughout an insulating ...

A: we have to calculate magnitude of electric field at point P

Q: Problem 2: A firefighter, whose mass (including clothing and equipment) is m =81 kg, hears the alarm...

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Q: Two vectors in Cartesian coordinates have components A = (1, 1) and B = (2, y). If the scalar produ...

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Q: If you drive at a constant velocity of 30 m/s for 1.5 hrs, what will be your displacement in meters?...

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Q: The force required to compress a non-standard spring as a function of displacement from equilibrium ...

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Q: 3. In the Bohr model of the hydrogen atom, what is the de Broglie wavelength for the electron when i...

A: Ques:

Q: Four capacitors with capacitances C1 = 3.5 nF, C2 = 2.1 nF, and C3 = 1.3 nF and C4 = 4.9 nF are conn...

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Q: 1. Energy Conservation A 0.100-kg toy car is launched from a spring that is initially displaced 5.00...

A: Write the given values with the suitable variables. m=0.100 kgx=5 cm=0.05 md=30 cm=0.3 m Here, m, x,...

Q: If the radius of the path of a body in uniform circular motion is doubled and the speed is kept the ...

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Q: A disk, initially rotating at 136 rad/s, is slowed down with a constant angular acceleration of magn...

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Q: A 4-kg ball has a momentum of 12kg*m/s. What is the ball's speed?

A: Given data:  Mass (m) = 4 kg Momentum (P) = 12 kg.m/s Required: The ball's speed (v) 

Applications Of Reflection Of Light

When a light ray (termed as the incident ray) hits a surface and bounces back (forms a reflected ray), the process of reflection of light has taken place.

Sign Convention for Mirrors

A mirror is made of glass that is coated with a metal amalgam on one side due to which the light ray incident on the surface undergoes reflection and not refraction.