1. When the aluminum can-water-metal block system reaches the equilibrium temperature of 30 °C, 20 grams of ice at 0°C is placed in the can. If the latent heat of fusion is 334, 000 J/kg, the amount of heat needed to melt the ice is?

Q: Calculate the current /3 in the following circuit. (A) A. -8 A (B) B. -2 A C. 2A (D) D8A 1₁ = 7A 1₂=…

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Q: Find the mass Kinetic energy Velocity of object <= 1260 J 24 m/s

A: Given data :                         Kinetic energy    =    K•E                            Velocity…

Q: b. An air filled 50μF capacitor has a voltage of 10V. An insulator with a dielectric constant of 4.0…

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Q: Calculate impulse Force=10.75 N Time 3 s

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Q: When light passes from one medium to another, its frequency remains the same but its wavelength…

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Q: Determine the 'spring constant' of the climbing rope if it stretches 2 m under the weight of a 70 kg…

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Q: An astronaut has left the International Space Station to test a new space scooter. Her partner…

A: A) initial velocity (u) = 15 ms , towards right final velocity (v) = 5 ms , towards right

Q: Your starship, the Aimless Wanderer, lands on the mysterious planet Mongo. As chief…

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Q: Mantles for gas lanterns contain thorium, because it forms an oxide that can survive being heated to…

A: Number of Thorium nuclei in 390mg of thorium is N  = 60.2*1023/mol/232g/mol *(390*10-3g)     =…

Q: If you wish to take a picture of a bullet traveling at 500 m/s, then a very brief flash of light…

A: A Flash tube is an electric lamp which is used to produce extremely intense white light for a very…

Q: Find pressure Force=2.6 N Area 2 mm2

A: Given data : Force=F Area=A   Required : Pressure

Q: Find the impulse Force 12.12 N Time-5.1 s

A: Force = 12.12 N Time = 5.1 s Impulse = Force x Time

Q: A straight wire with length of 28 cm sweeps across a 0.87 T magnetic field with a speed of 1.3 m/s.…

A: Given Information: The length of the wire is L=28 cm The magnetic field in the wire is B=0.87 T The…

Q: What is physics

A: Physics:

Q: 41. A certain slide projector has a 100 mm focal length lens. (a) How far away is the screen, if a…

A: do = 103mm f = 100mm we know 1/f = 1/di+1/do 1/100 = 1/di +1/103 di = 3433.3mm di = 3.4333

Q: Find pressure Force=2.5 N Area=1 m2

A: Given data :                 Force = 2.5 N                 Area = 1 m2

Q: How can you compare alternating current (AC) and direct current (DC)?

A: Introduction :- Here we have to tell the difference between the direct current and alternating…

Q: The non-attached end of a horizontal rope is oscillated vertically with a frequency of 8Hz. The rope…

A: frequency (f) = 8 Hz Tension (T) = 78 N linear mass density (μ) = 0.36 kgm

Q: If the skater has the same speed of rotation during the following spin positions, what is the…

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Q: Work and Energy shows that the ball which has the highest bounce has the least kinetic energy lost.…

A: A body which is in motion posses kinetic energy. A body having mass m velocity v, possess following…

Q: An airplane travels 40 miles in 10 minutes, then travels 20 miles in 80 minutes. Is the pilot…

A: Given data :- distance d1 = 40 miles time t1 = 10 minutes distance d2 = 20 miles time t2 = 80…

Q: 24 cubic feet of a gas at a gauge pressure of 246 psig is compressed to 6 cubic feet. After the…

A: Given data: The initial volume of the gas is Vi=24 ft3. The initial pressure of the gas is Pi=246…

Q: Consider a closed triangular box resting within a horizontal electric field of magnitude E = 7.80 x…

A: For the vertical rectangular surface, the area (shown as A1 is ANS in the Fig.)is A…

Q: Determine mass Density=1032 kg/m3 Volume=0.002 m3

A: Given data : Volume=V Density=ρ   Required : Mass

Q: Fill in the blanks - 1 attachment A block is pushed against a horizontal spring, compressing it to…

A: Apply the energy conservation equation for the spring.

Q: The 1st experiment that is finding the acceleration due to gravity has the value of g that is…

A: Solution 1 - Since the time period T of the pendulum can be found out by using the expression as…

Q: acceleration due to gravity has the value of g that is affected by the bob's mass. True or false

A: When a body is in free fall motion, then it comes towards surface of earth under the influence of…

Q: A displacement vector points in a direction of = 28° left of the positive y- axis. The magnitude of…

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Q: A capacitor composed of two metal plates separated by an air gap of 1mm has a voltage of 15 V. 7.…

A: Given Data:- Separation between the two metal plates of the capacitor is d=1 mm  =1 mm×10-3 m1 mm…

Q: What is needed so that we can use the AC power source in appliances that requires only low AC power?

A: Transformer is device which can be two types according to its working. If a transformer convert high…

Q: A copper disk with moment of inertia I is mounted on a fixed, frictionless axle. The angular speed…

A: Rotational Power is equal to the net torque multiplied by the moment of inertia of the system.…

Q: Determine the speed of car Distance-21.57 m Time=2 s

A: Given data : Distance=d Time=t   Required : Speed

Q: An ammeter connected in series with three resistors reads an electric current of 2 A. What is the…

A: There are two type of connection of resistance, series and parallel. The ammeter shows the reading…

Q: Activity 1- AC and DC Current Direction: Look around your house, name at least 6 devices that uses…

A: AC Current : An electric current which periodically reverses direction and changes its magnitude…

Q: ms, a bolt of thing can transfer us (the amount and time can vary considerably). We can model such a…

A: Magnetic field due to infinite long wireB=μ0i2πr  Where, i = current in the wire r = distance of the…

Q: . A 4.0-cm object is placed 30.0 cm from a converging lens that has a focal length of 10.0 cm as…

A: Given: The distance of the object is 30 cm. The height of the object is 3 cm. The focal length of…

Q: A baseball and a ball-shaped slime, both 70g, are thrown at a brick wall with equal speeds. The…

A: mass of baseball and baseball shaped slime = 70 g The baseball bounces whereas the slime sticks Let…

Q: Why do javelin throwers sprint down the runway?   Question 15 options:   warm up before the throw…

A: Javelin in the game in which the thrower runs with the javelin before throwing it.

Q: Calculate impulse Force=10.75 N Time=3 s

A: Given data : Time=t Force=F   Required : Impulse

Q: "Constructive interference fringes from a bright blue laser (wavelength 425 nm) shining onto a…

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Q: A 1000kg space probe is motionless in space. To start moving, its main engine is fired for 5s during…

A: Given data: The mass of space probe is M=1000 kg. The speed of exhaust gas is u=5000 m/s. The speed…

Q: A uniform circular thin rod of radius 10 in. is attached to a pin at I and to the cable AB. Find the…

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Q: Anna wants to cool 0.25 kg of water, initially at 25°C, by adding ice initially at -20°C. How much…

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Q: Must a capacitor’s plates be made of conducting material? What would happen if two insulating plates…

A: The insulating material do not allow the flow of the charge where as the conducting materials are…

Q: Q12 Calculate the constant of the coil of the galvanometer if you know that the coil is square in…

A: At equilibrium, deflecting couple = restoring couple nBIA=CθC=nBIAθ

Q: E S] An object is located at a distance s = 14 [cm] in front of a mirror having a focal length of f…

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Q: A perfect conducting sphere of radius r is such that its net charge resides on the surface. At any…

A: Magnetic field inside the sphere:

Q: Calculate the fall length for a factor 0.2 fall if the rope length is 50 m. 10 m 20 m 15 m 05m

A: Fall factor is the fall length divided by the rope length. So, fall length = fall factor × rope…

Q: State 3 reasons why the power generated in a nuclear core is limited by thermal considerations and…

A: A reactor core contains many fuel assemblies. The heat produced during nuclear fission in the…

Q: What is the acceleration produced by a force of 260 N exerted on an object of mass 24 kg.

A: Given data :                         Force     =    F                          Mass    =    m…

Calorimetry

Measuring the heat transferred during chemical reactions or other physical processes is known as calorimetry. It comes under the branch of thermochemistry.