A circular shaped copper  metal with mass of  20  kg has  the  same  diameter  as a circular shaped  zinc  metal  of  mass 15  g.  The  metals  are  simultaneously  dropped  from  the  rooftop  of  a  high  rise  building.  When  they  are 8  meters  from  the  ground ,  they  have  identical a) accelerations b) momenta c) potential energies d) kinetic energies e) non of the above

Q: What is the gravitational potential due to point mass, m at a distance r, from it? ?

A: Gravitational potential due to point mass:

Q: Find the gravitational potential energy of a light that a mass of 4.2kg and is 2 m above the ground.

A: Given data :                    Height     =    h                       Mass      =    m…

Q: An object attached to a spring oscillates on a frictionless horizontal track with an amplitude A =…

A: Given : A = 0.2 m v = 4 m/s

Q: A certain appliance takes 2.0A at 220 V. Determine the cost of operating the appliance for a whole…

A: Given value--- current = 2 A. voltage = 220 V. cost = 10 $/kW-h. time = whole day. We have to…

Q: An insulated beaker with negligible mass contains quid water with a mass of 0.220 kg and a…

A:

Q: How much calories of heat are needed to convert 500 grams of water at 30°C to steam at 150°C?…

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Q: C. 305.2 1--1 Convert 66.0 km²/h³ to m²/s³. 9. A. B. 0.001192 m²/s³ 0.001341 m²/s³ 0.001415 m²/s³ C.…

A: Ans is 141.438 m^2/s^3.

Q: (II) Determine the energy content of 100 g of Karen's fudge cookies from the following measurements.…

A: Given data: Mass of water, mw=2 kg Mass of aluminum bomb, mb=0.615 kg Mass of aluminum calorimeter,…

Q: maxx of a body s ky з ку is it's weight? what

A: Given: The mass of the object is 3 kg.

Q: A tank is in the form of inverted right circular cone 8 m across the top and 10 m deep (as shown in…

A:

Q: Four resistors, R1 = 100 ohms, R2 = 250 ohms, R3 = 350 ohms, and R4 = 200 ohms are connected such…

A:

Q: Find current Voltahe=12 Volt Resistance=3.4 Ohms

A:

Q: Based from the graph of Temperature versus Energy as shown, which of the following statements is…

A: Given Graph between temperature and energy as shown in the figure. We have to choose the correct…

Q: The induced emf in a DC machine when running  at 500 rpm is 180V. Calculate the induced emf  while…

A:

Q: 37. (1) One end of a 56-cm-long copper rod with a diameter of 2.0 cm is kept at 460°C, and the other…

A: Given : L=56 cm = 0.56 m Diameter = 2 cm = 0.02 m Area =πr^2=3.14*0.01*0.01=0.000314  ΔT= (460 -…

Q: Calculate the momentum of a car having mass 340 kg moving with a velocity 42 m/s

A: Given value--- mass = 340 kg. velocity = 42 m/s  We have to find--- momentum?

Q: A ball is suspended from a vertical spring with spring constant of 82.7 N/m. What is the mass of the…

A:

Q: A plastic sphere floats in water with 60.0% of its volume submerged. This same sphere floats in…

A: Volume submerged in water(V1) = 60.0% Volume  submerged in other liquid (V2)= 40.0 %

Q: 1=2.78 |h=31m Find P-E g=10m ls2

A: Given Mass(m)=2.78 kg Hight(H)=3.1 m Gravitational acceleration (g)=10 m/s2 To find  gravitational…

Q: 20. During a stormy season, winds can move horizontally at 30 m/s. If air strikes a person at the…

A: Given: The speed of the wind is 30 m/s. The strike rate is 40 kg/s.m2. The height of the person is…

Q: At a fireworks display at a shopping mall, a shopper noticed that the sound of an exploding shell…

A: The speed of sound is v = 345 m/s.

Q: A horizontal oscillator needs 10 seconds to accomplish 20 oscillations. The angular frequency of…

A: Given: The oscillator completes n= 20 oscillations in t=10 seconds.

Q: How much energy in Joules is needed by a 10 grams of ice at -30°C to become steam at 120°C? Express…

A: Temperature  of ice(Ti) = -30°c Final temperature of steam (Ts) = 120°C

Q: Find the value of force applied if work done is 120.011 J and displacement is 21.021 m

A: Given data :                   Work done     =     W                  Displacement   =    d…

Q: An object attached to a spring oscillates on a frictionless horizontal track with an amplitude A =…

A:

Q: 4. (a) In the figure, what current does the ammeter read if the ideal battery is 5.0 V, R1 = 2.0 2,…

A:

Q: Considering the circuit shown below, determine the potential difference Vad in volts. 3 Ω b 7V 2V]+…

A:

Q: The graph below represents the variation of position of a mass in a mass spring system with respect…

A: The velocity in centimeters per second is equal to the distance in centimeters divided by time in…

Q: A.) ift+ B.) "If++ PA PA 3 if C PA

A:

Q: Find the gravitational potential energy of a light that a mass of 4.2kg and is 2 m above the ground.

A: Given data:  Mass (m) = 4.2 kg Height (h) = 2 m Required: The gravitational potential energy (PE)

Q: What is the current in the 20-2 resistor when & = 9.0 V shown in the circuit below? 20 92 15 Ω 30 92…

A:

Q: A mass of steam at 120°C is added to 2kg of ice at 0°C to yield water at 20°C. What is the total…

A: Latent Heat: The heat required to convert a solid into a liquid or vapor (latent heat of fusion), or…

Q: Find current Voltahe 12 Volt Resistance 3.4 Ohms

A:

Q: ****************** A vertical spring stretches 4.4 cm when a 4-g object is hung from it. The object…

A:

Q: A 70 cm long straight wire carrying a current of 2.9 A is placed in an 8.9 T magnetic field. The…

A:

Q: Given data: Mass = Density = Determine the volume 25 kg 670 kg / m³

A: Volume = mass/ density

Q: Find current Voltahe=12 Volt Resistance 3.4 Ohms

A: given voltage(V)=12 volte Resistance (R)=3.4 ohms Required Current (I)=?

Q: 0m=2.78 |h=31m Find PE g=10m ls2

A: Given data : Mass=m Acceleration due to gravity=g Height=h   Required : Potential energy

Q: 10. A straight long wire carries an electric current out the page. The current is placed in a…

A: W can use the equation F=IL×B The current is out of the page,so it is vertically upward. The uniform…

Q: A tortoise moves a distance of 102 metres in 0.26 seconds what is the average speed of tortoise in…

A: We know thatVavg=dtVavg=Average speedd=Total distance travelledt=Total time taken

Q: Three resistors of 50 ohms, 100 ohms, and an unknown resistance R are connected in parallel and the…

A:

Q: A bar magnet is divided into two pieces. Which of the following statements is true about the force…

A: Bar magnet : A bar magnet is a rectangular piece of an object, made up of iron, steel or any other…

Q: 2. A cube with a length of 10cm is made up of Aluminum metal (S = 25x10⁹ Pa). A horizontal shear…

A:

Q: Om=2.78 |h=31m Find P.E g=10m ls2

A:

Q: A spacecraft starts from rest, and makes a journey to a destination 355000 km from its starting…

A:

Q: Consider a horizontal spring- mass system with an object of mass m attached to a spring of constant…

A: Correct option  :  quadrupled (×4) Because  We know period  of oscillation of  horizontal spring…

Q: 40. A 5:00-cm tall light bulb is placed a distance of 55.5 cm from a concave mirror and the image…

A:

Q: it shows mechanical energy X if not 1. A boy dribbling a ball. 2. A boy playing an online game. 3.…

A: (1)  A boy dribbling a ball. (X)    Not any work is done or loss of energy.   (2) A boy playing an…

Q: A 40 cm long straight wire carrying a current of 1.4 A is perpendicular to a 1.2 T magnetic field.…

A: Given data:  Length (L) = 40 cm = 0.40 m Current (I) = 1.4 A Angle (θ) = 90° Magnetic field (B) =…

Q: Four resistors, R1 = 100 ohms, R2 =250 ohms, R3 = 350 ohms, and R4 = 200 ohms are connected such…

A: