1: Suppose you have 10 light bulbs each of 100 Watt at your home. All of them are used for 6 hours every day. If the billing rate is 9 cent per unit (kilowatt-hr), how much do you have to pay in a month for those 10 bulbs?  2: An energy saving light bulb is saying that it would glow like a 60 watt bulb but its actual power consumption is 25 watts. If this light is turned on for 5 hours a day, how much is the saving in a year (consider billing rate is 10 cent per kilowatt-hr)?

Q: ball is shot vertically into the air at a velocity of 60 m/s. After 6 seconds, another ball is shot ...

A: We have given that v=60m/s  ti=6s  x=123m tf=9s  x=v(tf-ti)-0.5*9.81(tf-ti) 123=3v-0.5*9.81(9-6)2  3...

Q: 1. The potential at the surface of a sphere (radius R) is given by Vo(0) = k cos(46) where k is a co...

A: We know that, Surface area of sphere is 4πr² and, Volume of a sphere is (4/3)πr³

Q: Coleuloate the gravitutional fotential of a 12.6 kg box a bove the floor. Assusine thatthe desi gnat...

A: Mass , m = 12.6 kg Height , h = 4 m To find = Gravitational potential energy 

Q: 1.11 Apply the grid method to calculate force using F = ma. a. Find force in newtons for m = 10 kg a...

A: (a) solution- Given  mass(m)= 10 kg Acceleration (a)= 10 m/s² From Newton's second law of motion F= ...

Q: Calculate the currents in each resistor. R5 20 12V I2 = R1 50 I3 = R2 80 28 V Is = R3 30 R4 10 22 V

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Q: Part A A sinusoidal wave traveling on a string has a period of 0.22 s, a wavelength of 30 cm, and an...

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Q: 4. Determine the number of significant digits in the following: a) 150.50 mL b) 10.0023 g c) 142.00 ...

A: Significant digits : It is defined as the number of digits which are significant to our answer.  It ...

Q: Vector A has a magnitude of 37 units and points in the positive y direction. When vector B is added ...

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Q: A child pulls a sled upon snow covered hill. The child does 400 J of work on the sled. If child walk...

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Q: 3. A 2.50-L volume of hydrogen measured at -196 °C is warmed to 100 °C. Calculate the volume of the ...

A: for constant volume, we have the relation V1T1=V2T2

Q: Explain how two objects can be attracted due to an electric force, even when one object has zero net...

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Q: Tutorial Exercise The heating element of a coffeemaker operates at 120 V and carries a current of 3....

A: The value of Q is 2.23 x 10⁵ J

Q: Express each of the forces shown below in Cartesian vector form; 25 kN

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Q: A. The coefficient of static friction between a 5 kg box and an inclined plane of 35° is 0.70. Deter...

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Q: Calculate the frequency and energy of blue light that has a wavelength of 400nm.

A: Given that :- Wavelength λ = 400 nm Thus we can find frequency ν of the blue light as below-        ...

Q: How much heat QH does a heat pump with a coefficient of performance of 2.00 deliver when supplied wi...

A: Given,   coefficient of performance = 2.00                                           W = 4.10 kJ    ...

Q: Define the equation for the electron's velocity. Define the equation for the electron's position

A: Solution of part A   The electric force on the electron due to the electric field is Fe = -eE the ne...

Q: c) Solve for the time of flight t and the height y at which the water enters the window. Report both...

A: In this question we have to find the time and the height at which water enters the window. Please gi...

Q: The Figure (and other information) at the top of the last page is repeated below for your convenienc...

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Q: Why are capacitors typically cylindrical in shape?

A: The capacitor is a device that is used to store electrical energy in an electric field. It is a pass...

Q: Rank according to magnitude of đifference in potential between points N and M from largest to smalle...

A: In 'n' identical resistors connected in series, Rnet = nR Vi = Vn In 'n' identical resistors connect...

Q: 35 30 Figure 1. The red points from 1 to 15 show the successive locations of a puck at times t = 0s,...

A: We can see that, the blue co-ordinate system is a bit tilted with respect to the black co-ordinate s...

Q: 4. A dancer on ice spins faster when she folds her arms. This is due to A an increase in kinetic ene...

A: Concept Torque =Rate of change of angular momentumτ =dLdtIf no external torque is applied τ =0dLdt =...

Q: Two points in a plane have polar coordinates (2.40 m, 40.0°) and (4.50 m, 110.0°). (a) Determine th...

A: The cartesian coordinates of a point is given by ax = acosθ ay = asinθ, where a is the magnitude of ...

Q: A 1 ?3container is filled with 0.12 ?3of granite, 0.15 ?3of sand, 0.2 ?3of liquid water, and the res...

A: Specific volume is given by ϑ = Vm, where V is the total volume of the constituents m is the total m...

Q: Impulse-Momentum Theorem. horizontally to the right at 50.0 m/s, and it leaves the bat traveling to ...

A: we have F∆t = change of momentum= final momentum-initial momentum

Q: Torque By means of diagram, show and explain how the two (2) conditions of equilibrium are applied o...

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Q: A) Plot the following vectors in the "PHET: Vector Addition" simulation: a : ag -2; ay -7 %3D b: b, ...

A: Given that:- Addition of two given vectors.

Q: Consider an electron initially at rest placed in a uniform electric field of 4.50 N/C as shown in th...

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Q: 12.4 (a) What is the average density of the sun? (b) What is the av- erage density of a neutron star...

A: Density = D = m / V In case of the neutron star we know that it has the same mass as the sun, m = 1....

Q: A 5-kg wooden block sits on top of a fixed incline oriented at an angle 0=30°. The coefficients of f...

A: Given: m =5 kgP =60Nμs=0.60μk=0.30N=42.5 N

Q: An American traveler in Kenya carries a transformer to convert Kenya's standard 240 V to 120 V so th...

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Q: The table below shows information about the various colors of visible light. Calculatethe missing da...

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Q: Consider the two vectors A = 2 i - 2j and B = - i- 3j. (a) Calculate A +B (b) Calculate A -B (c) Cal...

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Q: The Figure below shows a pair of charged particles held fixed in location on the x-axis, and a point...

A: 1) Since the particles have opposite charges, The charged particle Q1 will attract the charged parti...

Q: Two horizontal parallel plates are separated by a distance of (150 mm) creating an electric field of...

A: Given Two horizontal parallel plates are separated by a distance of (150 mm) creating an electric fi...

Q: The Figure below shows a pair of charged particles held fixed in location on the x-axis, and a point...

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Q: Two horizontal parallel plates are separated by a distance of 174 mm creating an electric field of 2...

A: Given data: Here, d represents the distance, E represents the electric field, v represents the velo...

Q: 1: If a ball moves 5 meter in 0.5 second, what is its speed? Does it have velocity? Why?

A: Since you have asked multiple questions  we will answer you the first question. Kindly repost the qu...

Q: A ball rolls off a table and falls to the ground below. Its entire flight is captured on a strobosco...

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Q: How far from the origin has the particle gone after 0.11 minutes if Vx = 3m/s , Vy = 2 m/s and Vz = ...

A: Given: vx=3 m/svy = 2 m/svz = 3.31 m/st = 0.11 m

Q: A proton is initially moving west at a speed of 1.09  106 m/s in a uniform magnetic field of magnitu...

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Q: Diodes are frequently used as temperature sensors. An experiment is set up in the lab and 20% of the...

A: diode conduction formula is I=I0eqVkT-1  

Q: What is the efficiency of a Carnot engine when it gets heat from its hot reservoir at 675K and expel...

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Q: 2. A particle charge 4 x 109 C is located at a point (0,0) in a certain coordinate system Assuming a...

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Q: e. A resistor of 6 k2 with tolerance 10% and another of 4 k 0 with tolerance 10% are connected in se...

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Q: :/ The only parameter that affects the conduction in semiconductors is temperature * O True False Co...

A: Semiconductors act as insulators at low temperatures and conductors at higher temperatures. Conducti...

Q: 4.5 J of work is required to compress the spring in the spring toy. If the spring constant of the sp...

A: Given data : Spring constant=K Work done=U   Required : Compression distance  

Q: 17) A contact lens is made of plastic with an index of refraction of 1.60. The lens has an outer rad...

A: Consider the given data as below. Index of refraction, n=1.60 The outer radius of curvature of lens,...

Q: A. A block of mass M rests on an inclined plane with a smooth surface forming a angle of 37 with the...

A: