Aluminum is often melted down for recycling purposes. Assuming 1 kg of aluminum is at 20 deg C (room temperature), what is the minimum amount of heat needed to melt it to a liquid? The specific heat capacity of aluminum is 899 J/kg°C, the melting point is 660°C, and the latent heat of fusion is 3.97 x 105 J/kg. 972,000 J 571,000 J 397,000 J 500,000 J

Q: Refer to the figure below: ... X Vo Horizontal Field As compared to the horizontal component of the ...

A:

Q: A blackbody radiator in the shape of a sphere has a surface area of 23m ^ 2 . If it has a temperatur...

A:

Q: A fluid that occupies a volume of 24 L weighs 214 N at a location where the gravitational accelerati...

A: Given value--- Volume = 24 L. weight = 214 N. g = 9.80 m/s2.  We have to find--- mass ?

Q: An apple crate with a weight of 225 N accelerates along a frictionless surface as the crate is pulle...

A:

Q: 1. Why does the voltage across the resistor for charging and discharging processes change the sign f...

A:

Q: block of mass M is hung by ropes as shown. The system is in equilibrium. The point O represents the ...

A:

Q: You drive your car from home to school at an average speed of 60 kph East for 1 hr and then continue...

A:

Q: Determine the magnitude of the torque acting on the free end of the coil and caused by a 0.90-T fiel...

A:

Q: A person of mass M stands on a bathroom scale inside a Ferris wheel compartment. The Ferris wheel ha...

A: Given A person of mass M stands on a bathroom scale inside a Ferris wheel compartment. The Ferris wh...

Q: A ball is thrown from a tower 30 m high above the ground with a velocity of 300 m/s directed at 20° ...

A: We use the equation for height travelled by a projectile to solve this. It is h = ho+uyt - 12gt2, wh...

Q: 4. You have three blocks of different dimensions as follows b, (400mmx250mm), b,(400mmx3000mm), b,(4...

A:

Q: Question 24 A system of two cables supports a 150-N ball as shown. 30° 150 N What is the tension in ...

A:

Q: A solenoid of radius 1.0 m with 790 turns and a length of 4.6 m surrounds a pigeon cage.

A:

Q: Light is incident at an angle of 52 degrees on the surface of a diamond. The index of refraction of ...

A: Given data :- angle of incidence i = 52° refractive index n = 2.42

Q: Diagram the forces acting on the crate.: B.) Pulling a crate at an angle A.) Pulling a crate 30°

A: (A) Here, mainly 4 forces acting on the system. (1) Weight of crate ( downwards)  (2) Normal reactio...

Q: A block weighing 100N is held on a 40˚ incline by a bar attached to a 150N block on a horizontal  pl...

A:

Q: ection: Read, analyze and solve the following word probiems. 1. A large piston of a hydraulic lift h...

A: According to Pascal's law Pressure applied at one point of liquid equally transmitted throughout. We...

Q: A speed boat pulls a water-skier (with a mass of 100 kg) at a steady speed by a rope at 15 degrees a...

A:

Q: 3. A conducting rod of length ( = 35.0 cm is free to slide on two parallel conducting bars as shown ...

A:

Q: Circular Motion: Please answer vertically. Thank You. A penny is put on a turntable 0.4 meters from...

A:

Q: A negative test charge of 50 µC is 5 meters from point A and 10 m from point B. Find the potential d...

A:

Q: Billiard ball collision in 2-D. Billiard ball A moving with speed vA= 2.5-m/s in the +x direction st...

A:

Q: When a 360-nF air capacitor is connected to a power supply, the energy stored in the capacitor is 15...

A: Write the expression for the energy stored in the capacitor.

Q: A robot pushes a 20-kg giftbox on the horizontal surface as part of the moving job for the holiday s...

A: Given term  Mass of giftbox ( m ) = 20 kg  Acceleration due to gravity ( g )  = 10 m/s μs = 0.75 μk...

Q: Two charges were initially held 5m away from each other. While keeping q_1 in place, q_2 was moved 3...

A:

Q: 1. Dry air will support a maximum electric field strength of about 2.0 x 108 V/m. Above that value, ...

A: Answer:-  Given  Electric field (E) = 2.0 × 108 V/m  Distance between the two plates (d) = 3.5 cm = ...

Q: The output EMF of a generator is given by V (t) = a sin(wt), where a = 231 V. Find the rms current i...

A: Given : Peak voltage (a) = 231 V and resistor (R) = 118 ohm

Q: A block is pulled along a rough level surface at constant speed by the force P. The figure shows the...

A:

Q: A positive charge of 5µC is placed in an electric field of 5. 30 x 10* - directed in the upward dire...

A:

Q: Determine the magnitude of the electrical force of attraction between two balloons with separate cha...

A:

Q: Four charges were arranged in space such that they form a rectangular configuration. The magnitude o...

A:

Q: A transformer has a primary with 4000 windings and a secondary coil with 78,000 windings. If the inp...

A:

Q: Am = 1.25 kg object hangs in equilibrium at the end of a rope (taken as massless) while a wind pushe...

A:

Q: A 3.0-kg block slides on a frictionless 20° inclined plane. A force of 16 N acting parallel to the i...

A:

Q: nasee Plides do wn an inclined plane 2.0 meters long, maRs SI 30° above the hori2ontal. Starting fro...

A: 4) mass = m= 100 kg distance = s = 2m angle = 30 degrees

Q: A force of 120 N has a rectangular component of 84 N acting along a line making an angle of 20° coun...

A:

Q: 7. (M) t (s) 10 Two objects C and D are moving according to graph. Which of the following is true? C...

A:

Q: Two point charges (A and B) are separated from each other by a distance of 6.68 m. What is the magni...

A:

Q: Two charges , Q1= -9.8 x10-4 C and Q2 exert a total force of 603N in the +x direction on a third cha...

A:

Q: A man is trying to move an object (m 14.0 kg) by pulling upward on the rope at an angle of 53° above...

A:

Q: A sound has an intensity of 150 W/m2 at a distance of 8.50 m from the source. What is the power of t...

A:

Q: The kinetic energy of a 4.0 kg object moving at 3.0 m/s is: 1. 12 J L{2. 18 J 3. 36 J 4. 48 J

A:

Q: Given that: A = xi + yj + zk, determine the value of: î (f x î) + ĵ x (f x j) + k x (f x k )

A:

Q: A nichrome rod of length LN = 78 cm is connected in series (end to end) to a carbon rod of length LC...

A:

Q: (1) Compute the equivalent capacitance of the network. 6 uF uF 6 uF 4 uF 4 uF 6 uF 6 uF 6 uF

A:

Q: In the following sketch, what is the net force acting on the box?

A:

Q: When we subtract a velocity vector from another velocity vector, the result is: a. a displacement. b...

A:

Q: Given the circuit below, with R=2 ohms and C-0.2 Farads, compute for the transfer function Vo(s)/Vin...

A: According to question we need to find transfer function V0 / Vin .  

Q: A swing consists of a board at the end of a 10 ft long rope. Think of the board as a point P at the ...

A:

Q: A 5.0-m long, 15-kg uniform ladder rests against a smooth vertical wall with the bottom of the ladde...

A:

Calorimetry

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