If electricity costs Php 4.50 per kw-hr, how much does it cost to use a 250 watt light bulb for 7 hrs?

Q: 17. Two charged objects attract each other with a force F. If the magnitude of both charges is…

A: Two charge object attract each other with force F . Two charge q1 , q2 and distance r

Q: A 17 kg body is moving through space in the positive direction of an x axis with a speed of 300 m/s…

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Q: In the figure, block A (mass 1.7 kg) slides into block B (mass 2.2 kg), along a frictionless…

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Q: A diffraction grating has 2575 lines per centimeter, and it produces a principal maximum at = 28.5°.…

A: Grating has 2575 lines per centimeterprinciple maximum angle =28.50wavelength for which light used…

Q: The figure shows a thin rod, of length L - 1.80 m and negligible mass, that can pivot about one end…

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Q: A 2.9 g marble is fired vertically upward using a spring gun. The spring must be compressed 7.7 cm…

A: a) Marble of mass(m) =2.9g=0.0029kg The height which the marble has reached after compression(h)…

Q: The NEXT morning, you wake up in a strange room yet again, and this time you drop a ball from a…

A: Height, h = 1.33 m Time, t = 0.365 s Initial velocity, u = 0 Planet's g = ?

Q: The figure below shows three points in the operation of the ballistic pendulum. The projectile…

A: we will momentum conservation to solve this question    P1 = P2

Q: An airplane passenger has 99.7 cm³ of air in his stomach just before the plane takes off from a…

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Q: 4 53 The image distance and magnification of the following will be A) di = 7.5 and m = .4 B) di =…

A: The object distance, do=-5 (negative sign represents the object is in the opposite direction to the…

Q: Light bulbs operate at 2500 degrees C.  What is the wavelength at which the most power is emitted…

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Q: The two mirrors illustrated in the figure below meet at a right angle. The beam of light in the…

A: As given, The distance, d=1.05 m The angle, θ=39.0°   Draw the free body diagram as below.

Q: 7. A parallel plate capacitor has a plate area of 0.525 m² and a plate separation of 2.15 mm. What…

A: The capacitance of a parallel plate capacitor is its ability to store electric charges. The SI unit…

Q: Starting at x = 0 m, a 1.5-kg object is moving at 6.0 m/s in the positive x direction. During its…

A: The initial speed of the object is u=6 m/s The mass of the object is  m=1.5 kg

Q: Q.6 Is it possible for the temperature to be lower than OK on the Kelvin temperature scale? Explain.

A: Since you have posted multiple questions, we will provide the  solution   only to the first question…

Q: Since neutron stars consist totally of neutrons, they are extremely massive and have a density that…

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Q: 8. A weight of 0.5kg stretches a spring by 0.49m. The spring-mass system is submerged in delicious…

A: We can start by finding the spring constant, k, using Hooke's law: F = -kx where: F is the force…

Q: The figure shows an 8.2 kg stone at rest on a spring. The spring is compressed 8.3 cm by the stone.…

A: Given : m = 8.2 kg x = 8.3 cm = 0.083 m d = 32 cm = 0.32 m

Q: A block with mass m = 5.00 kg slides down a surface inclined 36.9° to the horizontal (Figure 1). The…

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Q: Write Maxwell equation in integral form?

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Q: At most, how many bright fringes can be formed on either side of the central bright fringe when…

A: Wavelength of light: λ = 693 nm = 6.93 × 10-7 m Seperation between slits: d = 4.43 × 10-6 m We know…

Q: 3. You are in a boat fishing. You see a large bass sitting on the bottom. of sight hits the water…

A: To solve this problem, we can use the principles of trigonometry. We need to find the horizontal…

Q: A rotating flywheel has moment of inertia 18.0 kg m² for an axis along the axle about which the…

A: The moment of inertia of the flywheel is I=18.0 kg.m2 The initial kinetic energy of the flywheel is…

Q: A powerful motorcycle can accelerate from rest to 28.8 m/s (64 mi/h) in only 2.90 s. (For each…

A: Initial velocity of the motorcycle, u=0                           (since the motorcycle is at rest…

Q: A thermos contains 155 cm³ of coffee at 88.8 °C. To cool the coffee, you drop two 13.1-g ice cubes…

A: Given data   The volume of the thermosis(V)=155cm3   The initial temperature of the coffee is…

Q: Shown in the figure below is an electrical circuit containing three resistors and two batteries.…

A: Resistance values :     R1=11Ω, R2=4Ω, R3=1Ω

Q: Make a conclusions and generalizations to the data table. Experiment is all about power. Procedure…

A: Work done and power are related as follows: Power is ratio of work done to the time taken for it.

Q: In the figure, a 3.97 g ice flake is released from the edge of a hemispherical bowl whose radius ris…

A: Note: Since you have posted a question with multiple sub-parts, we will solve the first three…

Q: A ball is kicked with an initial velocity of 19 m/s in the horizontal direction and 14 m/s in the…

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Q: A box of mass 12.0 kg is pulled from rest up a 18.5 m long incline that makes an angle of 20.0° with…

A: Mass of box: m = 12 kg Length of inclined plane: s = 18.5 m Initial velocity of box: u = 0 FInal…

Q: A K-1 whitewater kayak has a volume of 225 liters (0.225 m3) and a mass of 10 kg. Sean wonders if…

A: Ms - mass of sean =70kg           Mk - mass of kayak.  =10Kg          Vk- volume of kayak.…

Q: Please make sure your answer is 100% correct, thanks A 69 Ω resistor, an 7.4 μF capacitor, and a 32…

A:

Q: The wavelength of an EMR wave is 6.31 x 10-7 m. Determine the frequency in Hz. Record your…

A: Given,  Wavelength of EMR L = 6.31 x 10-7 m

Q: Two shuffleboard disks of equal mass, one orange and the other yellow, are involved in an elastic,…

A: Given: Two shuffleboard disks of equal mass The yellow disk is initially at rest The orange disk…

Q: 5. What is the intensity level in decibels for a sound that has an intensity of 5×105 W/m²? A. 79 dB…

A: Sound intensity level (I0 in dB) is reference intensity corresponding at 0 dB: I0 = 1 × 10-12 W/m2…

Q: Describe how to change from degrees to radians, and from radians to revolutions.     A motorcycle…

A: Write the given values with the suitable variables. ωi=2000 rpm=200060 rps=33.33 rpsωf=11000…

Q: In Young's experiment a mixture of orange light (611 nm) and blue light (471 nm) shines on the…

A: wavelength of blue light=471nmwavelength of orange light =611nmdistance of fringes =0.392m

Q: ith a A turntable rotates freely, without a motor, and without friction or air resistance, mouse…

A: For the given system, the net external torque acting on the system is zero, hence angular momentum…

Q: A 1.5 V battery produces 45.9 mA when it is across a 30.00 load. The potential difference across the…

A: Let's  calculate the terminal voltage, From ohm's law we know that V' = IR

Q: A steel section of the Alaskan pipeline had a length of 64.6 m and a temperature of 22.4 °C when it…

A: Initial temperature of the steel pipeline is L=64.6 m. Initial temperature is ti=22.4°C. Final…

Q: Shown below is a configuration of charges that has been formed into a right triangle. We shall…

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Q: he distance between the boats increasing? Two boats leave a dock at the same time. One boat travels…

A: Consider east to be along positive x-axis, y to be along positive y-axis and z to be the distance…

Q: 57. Organ pipe The lowest three standing wave vibration frequencies of an organ pipe are 120 Hz, 360…

A: Given fundamental frequency (f0) = 120 Hz First overtone (f1) = 360 Hz = 3f0 Second overtone (f2) =…

Q: A series RCL circuit contains only a capacitor (C=7.39 µF), an inductor (L=5.77 mH), and a generator…

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Q: In the figure here, a stationary block explodes into two pieces L and R that slide across a…

A: Given:-          Mass of piece L (mL) = 2.1 kg         Coefficient of kinetic friction for left…

Q: 76.0 MHz and 88.0 to 174 MHz not utilized for TV broadcasting. Each channel has a frequency width of…

A: The relation between the wavelength (lambda) and frequency (f) of electromagnetic wave is given by,…

Q: taut string is tied down at both ends. Assume that the fundamental mode of oscillation of the string…

A: We know that, v=fλ                           (1) v - Wave speed f - Frequency λ - Wavelength…

Q: 10. The moving rod in figure below is 12.0 cm long and is pulled at a speed of 15 cm/s. If the…

A: Given below in handwritten

Q: In the billiard game, the cue ball (m = 0.38 kg) is moving at a speed of 5.95 m/s in the positive…

A: Mass of the cue ball, m=0.38kg Speed of the cue ball, v=5.95m/s Angles : α=22.0∘,β=50.0∘

Q: In the figure, four long straight wires are perpendicular to the page, and their cross sections form…

A: Current in each wire: I = 7.50 A Distance between wire 1 & 4: d14 = 17.5 cm = 0.175 m Distance…