30. A metal block which measures 25 cm x 10 cm x 0.05 m has a mass of 13.5 kg. Find its density in g/ml.

Q: An iron rod with an initial length of 12.35 m has its temperature raised from 10o C to 36.23o C. If…

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Q: 7. A solid, uniform, spherical boulder starts from rest and rolls down a 50.0-m-high hill, as shown…

A: Total kinetic energy of the rolling body K.ETotal =12mv2 +12Iω2 According to energy conservation,…

Q: Problem 1: You measure the mass of a ball to be M = 16 kg and its diameter to be d = 1.62 m. Part…

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Q: A 50 kg student bounces up from a trampoline with a speed of 3.4 m/s. Determine the work done on the…

A: Given: The mass of the student is 50 kg. The speed of the student is 3.4 m/s. The height of the…

Q: 15.6 ** A fisherman notices that his boat is moving up and down periodically, owing to waves on the…

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Q: Solve for Vo1, Vo2, & I (diodes are silicon) Vo1 Vo2 1k 0.47K 20V Ge

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Q: At what net rate does heat radiate from a 263-m2 black roof on a night when the roof’s temperature…

A: Given data The area of the black roof is given as A = 263 m2. The lower temperature of the roof is…

Q: During an experiment, a ball was thrown from the top of a building, 15.0 m in height from a spring.…

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Q: %3D In the circuit shown, R1 = 30, R2 = 20, R3 = 50, ɛ1 = 4V, ɛ2 = 10V and ɛ3 = 6V. a E2+ E3+ I3 R1…

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Q: Two 2.0cm x 2.0cm metal electrodes are spaced 1.4 mm apart and connected by wires to the terminals…

A: Given,9.0 V dimension of ht electrodes, 2.0 cm ×2.0 cm separated by a distance, d = 1.4 mm connected…

Q: Link The result of the system of converging forces is shown in the figure below

A: Given forces are, F1=500 NF2=300 NF3=200 N The angles of F1 and F2 with x-axis are, θ1=45°θ2=30°

Q: How would you throw an egg without breaking it? A. Boil the egg B. Throw it against a net C. Throw…

A: How would you throw an egg without breaking it? A. Boil the egg B. Throw it against a net C. Throw…

Q: 1. What is the mass defect of a fission reaction that releases 2.9 x 1011 J of energy? (A) 3.2 ×…

A: Given data:  Energy (E) = 2.9×10-11 J Required: Mass (m)

Q: 6. A train approaching a crossing sounds its horn with a frequency of 750 Hz. An observer standing…

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Q: Part A Two 3.0 cm X 3.0 cm square aluminum electrodes, spaced 0.80 mm apart, are connected to a 300…

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Q: A 10-ohm resistor has a constant current. If 1,200 C of charge flow through it in 4 minutes what is…

A: Given data:  Charge (q) = 1200 C Time (t) = 4 minutes Required: Current (I)

Q: ____17. When an atom is a gamma ray emitter, the atom releases: ________________.  ____18. The time…

A: 17. Gamma is form of electromagnetic radiation. Gamma ray is electromagnetic ray of shortest…

Q: 55-2 A body of mass 1 kg is ejected from the earth's surface upwards with an initial velocity of 15…

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Q: A candle 5 cm high is placed 40 cm from a concave mirror with a radius of curvature of 60 cm.

A: Solution:-

Q: A counterflow heat exchanger is designed to heat fuel oil from 60°C to 120°C while the heating fluid…

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Q: A force F (x) = (10 − 2x) N applied in the positive x-direction moves an object 3 m from x = 2 to x…

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Q: A ball is thrown, and its velocity at time t is v(t) = (−t + 5) meters per second. What is its…

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Q: 11. How many calories of heat are required by 90 grams of ice at -8°C to change to steam at 130°C?

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Q: Problem 8: Tectonic plates are large segments of the Earth's crust that move slowly. Suppose that…

A: Write the given values with the suitable variables. v=4.4 cm/year=4.4×10-2 m365×24×60×60…

Q: A wall 2 cm thick is to be constructed from material that has an average thermal conductivity of 1.3…

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Q: In a photoelectric effect experiment it is observed that no current flows when the wavelength of EM…

A: GivenNo current flows when wavelength of EM rediation is greater than 570 nmTo FindA. Calculate the…

Q: Solve for Vo, i1, 12 & I (diodes are silicon) Vo Si 0.47K 20V- Ge SI 12 SI 0.47K

A: The cut in voltage for Germanium diode = 0.3 V Silicon diode = 0.7 V

Q: ½mv.? + mgh: + w = ½mv:? + mgh: m = 3.50 kg V: = 9.91 m/s h: = 4.89 m V: = 5.20 m/s h: = 3.33 m w =…

A: Given, mass, m = 3.50 kg Initial Velocity, V1 = 9.91 m/s Final Velocity, V2 = 5.20 m/s initial…

Q: A man weighing 750N climbs a flight of stairs which is 5 meters high. How much work does he do?

A: Given data:  Weight (mg) = 750 N Height (h) = 5 m Required: The work done (W)

Q: A cylindrical container that is open at the top holds a fluid of density 900 kg/m3. At the bottom of…

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Q: c) Three infinitely long, parallel wires are located at the corners of an equilateral triangle as…

A: Relative permitivity=10 Relative permeability=4 Current=100A

Q: 01 = 26°, 82 = 37', T1 = 89.2 N, g=9.80 m/s2, m = ? kg, Enter your answer using 3 significant…

A: Given,

Q: The magnetic field inside a 100-turn solenoid 2 cm long that carries a 10-A current is (let μ=1.257…

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Q: What usually happens when vapor condenses into liquid? a. it absorbs heat b. it rejects heat c. its…

A: Solution: Step1 - Here we will understand the concept that will be used to solve the question. As we…

Q: what is its Mach number?

A: We know mach number=local flow velocity velocity of sound in this…

Q: Calculate the rate of heat conduction through house walls that are 17.2 cm thick and that have an…

A: Write the given values with the suitable variables. t=17.2 cm=0.172 mA=182 m2T1=15.56 °CT2=3.39 °C…

Q: An isolated solid spherical conductor of radius 5.00 cm is surrounded by dry air. It is given a…

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Q: Part A Two 7.0 cm X 7.0 cm metal electrodes are spaced 1.0 mm apart and connected by wires to the…

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Q: James (mass 90.0 kg) and Ramon (mass 60.0 kg) are 20.0 m apart on a dry rice paddy (basakan). Midway…

A: Mass of James = 90 kg Mass of Ramon = 60 kg Since the surface is frictionless and there are no other…

Q: 7. Determine using Kirchhoff's Laws, each branch current for the network shown in the Figure below.…

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Q: Complete the following diagrams below.

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Q: An object has a mass of 0.5 kg is placed in front of a compressed spring. When the spring was…

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Q: The force of +50.0μC at (-10.0m, 0) and +50.0μC at (10.0m, 0) on 20.0μC at (0, 0) is?

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Q: A wire of length 25. cm carrying a current of 5.80mA is to be formed into a circular coil and placed…

A: Given:-  A wire of length 25. cm carrying a current of 5.80mA is to be formed into a circular coil…

Q: draws a current of 20.0 A from a 240 V power source 15.0 m away. What is the minimum cross-sectional…

A: Given:-  An electric motor draws a current of I =  20.0 A from a  240 V power source d =  15.0 m…

Q: 27. A piece of carpet is 68.58 cm wide. How many strips of such carpet will it take to cover the…

A: Given: The width of the piece of the carpet is 68.58 cm = 0.6858 m. The width of the roop is 5.5 m.

Q: A bus is moving on a straight road 20 m/s. It is acceleration at 28m/s2 What will be it's velocity…

A: Given data :                     Acceleration    =    a                     Initial velocity    =…

Q: kindly answer this immediately thankyou -An automobile has a speed of 60 mi/h. When the brakes are…

A: An automobile has a speed of 60 mi/h. When the brakes are applied, it slows to 15 mi/h in 4 second.…

Q: An infinite number of charges each equal to 1nC are placed along the x-axis at x-1, x=2, x=4,…

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Q: Half of the volume of an object that weighs 100 N is submerged in water when allowed to float…

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