A heating coil inside an electric kettle delivers 2.1kW of electric power to the water in thekettle. How long will it take to raise the temperature of 0.5kg of water from 20C to 100C?   a. 80 seconds b. 60 seconds c. 50 seconds d. 40 seconds

Q: A clown carries two mylar balloons that rub against a circus elephant, causing the balloons to…

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Q: A satellite is held in orbit by a 2 000-N gravitational force. Each time the satellite completes an…

A: Given Data:- Gravitational force on the satellite is F=2000 N Circumference of the orbit is d=80000…

Q: friend throws a baseball of mass 0.100 kg, which you catch as it s traveling northward with a…

A: We know that the Your own mass is 72.3 kg and the sled's mass is 17.7 kg.  You're on the sled,…

Q: In Newton's Second Law F = ma; if we will double the force applied in the object while keeping the…

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Q: Cat Chaser. A dog, located at the origin, sees a running cat at rCi = 10. [m] i+15 [m j with a…

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Q: copper wire is r = 2.19 cm in radius and 2.6 m in length, has a resistivity of 1.72x10^-8 Ω m, and…

A: Given: The radius of the wire is 2.19 cm. The length of the wire is 2.6 m. The resistivity of the…

Q: A meterstick of negligible mass is placed on a fulcrum at the 0.60 m mark, with a 2.0 kg mass hung…

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Q: The concept of force might best be described as:   Action at a distance   a push or a pull…

A: Correct option is  2. Push and pull .

Q: A concave mirror has a focal length of 74.0 cm. (a) What is its radius of curvature? 148 cm (b)…

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Q: 2.3 x 10-4T 0.8 x 10-4 T 25° 0.6 m 0.8 x 10-4 T 25° 2.3 x 10-4T 0.2 m

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Q: A 7.0-kg bowling ball strikes a 2.0-kg pin. The pin flies forward with a velocity of 4.0 m/s; the…

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Q: Mark is trying to rescue Mary from a castle by climbing a uniform ladder that is 5 m long and weighs…

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Q: You are sitting in a sled, at rest on a pond covered with nice, thick, frictionless ice. Your own…

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Q: In the Atwood machine, what is the direction of tension?   same with gravitational force   depends…

A: We need to answer what is the direction of Tension in Atwood machine.  Atwood machine : It is a…

Q: A crate of mass 85 kg is pushed along a floor with a force of 30 N for a distance of 9 m. Calculate…

A: Given data:   Mass (m) = 85 kg Force (F) = 30 N Distance (d) = 9 m Needed: The work done (W)

Q: Find the position of the image of a small object given by a glass sphere (n=1.4) of radius 4 cm,…

A: Given data: The refractive index of glass is n=1.4. The radius of sphere is r= 4 cm. The refractive…

Q: A fishing bobber of unknown mass is a sphere with diameter of 3.00 cm. When the bobber is attached…

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Q: kes one end of a thin rod with a hammer. The speed of sound in the rod is 19 times the speed of…

A: speed of sound in air = Va= 347 m/s speed of sound in rod = Vr= 19 x 347 = 6593 m/s length of rod =…

Q: A stretched string has a mass per unit length of 5.30 g/cm and a tension of 18.5 N. A sinusoidal…

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Q: Radio waves from a star, of wavelength 154 m, reach a radio telescope by two separate paths, as…

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Q: A candle is placed at a distance of 9.4 cm from the front of the concave mirror, with a focal length…

A: Light reflection is the simple phenomenon of light bouncing back after striking an object. The most…

Q: 4. A 1.5 kg object is on a ramp as shown. The object accelerates down the ramp at 3.0 m/s². What is…

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Q: In many cases, prostate cancer is treated by implanting 60 to 100 small seeds of radioactive…

A: Given data: The half-life of palladium is t1/2=17 days. The mass contained by the grain is m=0.27…

Q: Examine the following position time graph:

A: Given, Graph of position versus time. Position is not changing with time.  Velocity is rate of…

Q: work done by Six moles of a monatomic ideal gas (

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Q: an object with a mass of 5.0 kg accelerates 8.0 m/s^2 when an unknown force is applied to it. what…

A: From Newton 2nd law we know,  Force(F) = mass(m) × acceleration(a)

Q: A ball is thrown upwards and caught when it comes back down. In the absence of air resistance, the…

A: Given: The intial and final position of the object is the same. The resistive force is unavailable.

Q: 4)A capacitor C 0.65 µF and unknown resistance R are connected in series to an ac power supply of…

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Q: Samantha pushes a 50-N crate up a ramp 25.0 m in length and inclined at 20° with the horizontal.…

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Q: A 1.00-cm-high object is placed 3.95 cm to the left of a converging lens of focal length 7.80 cm. A…

A: Given  The height of the object = 1 cm Distance of the object u = 3.95 cm Focal length of the…

Q: Organ pipe A, with both ends open, has a fundamental frequency of 340 Hz. The third harmonic of…

A: open orgon pipe antinodes are formed at both end while in closed orgon pipe nodes produced at…

Q: 0.50 kg U, = 1.5 m/s r= 0.95 m 2.0 m 1.9 m An engineer is working on a new roller coaster, and he…

A: Given, Mass=0.50kg Speed=1.5m/s Height=1.9m

Q: Atwood's machine consists of a frictionless pulley and two masses connected by a cable over the…

A: The magnitude of the acceleration of the masses is 3.27 m/s².

Q: A tall tree is growing across a river from you. You would like to know the distance between yourself…

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Q: object is 65 cm from a concave mirror. Find the radius of curvature of the mirror, knowing that (a)…

A: We know that the object distance u = -65 cm  for the concave mirror  We know that the mirror formula…

Q: d by 37%, (b) the image is real and magnified by 28%; (b) the image is virtual and enlarged by 80%.

A: We know that the mirror formula is given as  1f= 1v+1u where v is the image distance  u is the…

Q: Select the correct answer. When a ball hits a vertical wall, what happens to the components of…

A: Here the linear momentum of the ball in the x direction will remain conserved and change in the y…

Q: Suppose that sound is emitted uniformly in all directions by a public address system. The intensity…

A: Given The intensity at a location 28.0 m away from the sound source =  2.80 x 10-4 W/m2  We have to…

Q: Answer the following questions.   What is the origin of Lenz’s law? Why Lenz’s law is called the…

A: The conservation of energy is a physical law that applies to all things. It simply means that energy…

Q: At the park there is a pool shaped like a circle. A ring-shaped path goes around the pool. Its inner…

A: The  radius of the outer circle( R) = 14 yd The radius of the inner  circle(r)  =   10 yd   the…

Q: Place 9 equal point charges on vertices of a degudas no nagon (9-8 ided plygon). a)- what placel at…

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Q: The power output of a car engine running at 2300 rpmrpm is 300 kW . (a) How much work is done per…

A: 300kw is equal to 300kj/s

Q: Q2) Find the value of the capacitive reactance and current through a 100 µ F capacitor when…

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Q: Which of the following statement is NOT true in a uniform circular motion Kinetic Energy is…

A: To choose incorrect statement regarding uniform circular motion.

Q: While watching the clouds pass by, you notice a European swallow flying horizontally at a height of…

A: Motion of projectile can be divided into x component and y component.

Q: A car traveling in a circle with a uniform speed of 15 m/s means that the car travels ___ m/s along…

A: Given,  A car traveling in a circle with a uniform speed of 15 m/s. Uniform circular motion means…

Q: Determine the surface area and volume of the concrete curb using the theorem of PappusGuldinus T100…

A: We have determine the surface area and volume of the concert curb.

Q: Find the value of the current flowing through a capacitance 0.5 u F when connected to an AC source…

A: Write the given data. V=150 Vf=180π HzC=0.5×10-6 F

Q: Assuming that the youngs modulus of spider ilk is 8.4x10^9 pascals. If the spider silk a radius of…

A:

Human Metabolism

Being described as the most complicated machine ever encountered by humans, the human body and the cell metabolism is nothing less than a wonder. Metabolism is the set of life-sustaining chemical reactions within organisms.