How much heat must be removed from a 200-g block of copper to lower its temperature from 150°C to 30°C? The specific heat capacitv of copper is 0.093 cal/o•C

Q: An ambulance with a siren emitting a whine at 1590 Hz overtakes and passes a cyclist pedaling a bike…

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Q: Five charges are placed in a closed box. Each charge (except the first) has a magnitude which is…

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Q: 105 oF (a Fahrenheit temperature) is degrees on the Celsius scale and degrees on the Kelvin scale.

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Q: A load of 120 kg is pulled up by 6 m. Find the work done?

A: Given data,   Mass , m  =  120 kg   Height , h  =  6 m   Acceleration due to gravity, g  = 9.8 m/s2…

Q: Two loudspeakers placed next to each other each emit a pure tone with the same amplitude. One…

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Q: An object of mass m1 experiences a linear, elastic collision with a stationary object of unknown…

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Q: Two people, one of mass 100 kg and the other of mass 50 kg, stand facing each other on an…

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Q: In the figure, a 2900 kg demolition ball swings from the end of a crane. The length of the swinging…

A: Solution: Given: This problem belongs to branch Simple Harmonic Motion (SHM). L = length of cable of…

Q: Sound waves travel at 350 m/s through warm air and at 3,500 m/s through brass. What happens to the…

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Q: 15) A proton that is initially at rest is accelerated through an electric potential difference of…

A: Given data-                    electric potential difference that is accelerating the proton is ( V…

Q: A particle moves accordingly to a law of motion s = f(t) = t^2 e^−t, t ≥ 0, where t is measured in…

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Q: A harp string supports a wave with a wavelength of 2.3 m and a frequency of 220.0 Hz. Calculate its…

A: Given data,        Frequency  =  f        Wavelength  =  λ        Required,              Wave speed…

Q: A car travels 240 km in 6 hours. Find the average speed of the car in km/h?

A: Given data,     Distance  =   d     Time  =   t         To find ,          Average speed of the car

Q: Which of the following is *not* a primary Sl dimension? meter (m) kilogram (kg) second (s) ampere…

A: Required: The dimension which is not a primary SI dimension

Q: Can you name the three different processes that are used to make magnets?

A: We need to name the three different processes that are used to make magnets.

Q: Two very small +3.00-uC charges are at the ends of a meter stick. Find the electric potential…

A: Given data:  Two very small charges Placed at ends of the meter stick  q = +3.00 μC = +3.00×10-6 C k…

Q: About 29% of the body of a person floating in the Dead Sea will be above the water line. Assuming…

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Q: A wooden roller coaster contains a run in the shape of a sinusoidal curve, with a series of hills.…

A: Given: Crest of each hill: 110 ft Time is taken by car to go from top to bottom of hill  t: 1.8 s To…

Q: You’ve made the finals of the Science Olympics!  As one of your tasks, you’re given 1.0 g of copper…

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Q: What is Entropi?

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Q: Do you know how much strain the rope must bear in order to accelerate an automobile that weighs 960…

A: Mass of automobile = 960 kg  Acceleration = 1.2 m/s2

Q: Is there a use for the photoelectric effect in the real world?

A: Yes , there are many uses of photoelectric effect in real world , such as :- Solar pannel a series…

Q: A 58.1-kg skateboarder starts out with a speed of 2.03 m/s. He does 108 J of work on himself by…

A: Given:- Wp= work done by the person due to pushing with his feet against the ground. = 108 J Wf=…

Q: A 2.0-g particle moving at 5.8 m/s makes a perfectly elastic head-on collision with a resting 1.0-g…

A: Since there is no external force so linear momentum is conserved . Here M1, M2 are the masses of…

Q: Problem 4: Vectors A, B, and C are shown in Figure 4. The magnitudes of the three vectors are shown…

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Q: (a) Convert 46.0° to radians, using the appropriate conversion ratio. 0.80 rad (b) Convert 2.00 rad…

A: Length of arc is given as l= r© ,where © is the angle subtended by arc in radians

Q: "If we apply a ___________ to an object, its __________________ will change and it will…

A: If we apply a ___________ to an object, its __________________ will change and it will…

Q: the average human body contains approximately 5 liters of blood. if the blood has a density of 1060…

A: Given data:  Volume (V) = 5 L Density (ρ) = 1060 kg/m3  1 L = 1000 cm3 Required: Mass (m)

Q: A solid cylinder with radius 0.160 mm is mounted on a frictionless, stationary axle that lies along…

A: Given:- R= 0.16 m F= 5 N Slope of θ vs t = m= 16 rad/s2

Q: I'm confused as to why the angle changes to 60 deg. Why wouldn't the angle be 30deg?

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Q: Two particles, one with charge -7.13 x 10-6 C and the other with charge 4.39 x 10-6 C, are 0.0809 m…

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Q: Consider an insulating sphere of radius 17 cm and a charge of 11.6548 C uniformly dis- tributed…

A: According to charge induction, the charge between two separated parallel surfaces is equal but…

Q: Consider a system shown in the figure. Block A weighs 45 N and block B weighs 25 N. Once block B is…

A: Free body diagram gives whole idea of the forces acting. Force brings about motion and changes in…

Q: Suppose you plan to make an electromagnet by passing electric current through this solenoid so that…

A: In Electromagnetics concept,  When we make any electromagnet by passing the current, we get  North…

Q: Consider a toy rocket that undergoes one dimensional motion. It is launched from rest straight up…

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Q: 31) Four unequal resistors are connected in series with each other. Which one of the following…

A: In series connection, equivalent resistance is calculated as sum of all individual resistance.  If…

Q: An object hangs from a spring balance. The balance registers 32 N in air, 22 N when this object is…

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Q: Question 1 of 32 For a satellite to orbit Earth at a constant distance, its centripetal acceleration…

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Q: 8. The electric field at a distance of 1.0 m from a charged sphere is 100 N/C. At what distance from…

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Q: A wooden block experiences a frictional force, f, as it slides across a table. If a block of the…

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Q: cool

A: Aluminium has higher specific heat capacity which means you require more heat energy to heat up a…

Q: An automobile is travelling at 60km/h. calculate the angular velocity of the 0.35m radius wheels

A: Given data:  Speed (v) = 60 km/h Radius (r) = 0.35 m Required: Angular velocity (ω)

Q: A spinning wheel steadily slows from an initial angular velocity of 1.60 rev/s to 0.490 rev/s in…

A: Given that, Initial angular velocity (wi)= 1.60 rev/s Or (wi)= 1.60×2π rad/s = 10.06 rad/s Similarly…

Q: Q1. A truck driving on a paved road is capable of decelerating at a constant value of 5 m/s². (a) If…

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Q: 24) The length of a certain wire is doubled and at the same time its radius is also doubled. What is…

A: Formula: Resistance of a wire is R=fLA , where....  f is the ressistivity of the material of the…

Q: A man weighing 800 Newtons is standing in an elevator. If the elevator rises with an acceleration of…

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Q: A wooden block experiences a frictional force, f, as it slides across a table. If a block of the…

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Q: 1) A plastic rod is charged up by rubbing a wool cloth, and brought to an initially neutral metallic…

A: Correct answer is option ClB The rod is repelled by the sphere

Q: A stone was thrown with initial velocity of 20 m/s at angle 30 degrees above horizontal. If the…

A: Given:- Vo= 20 m/s θ= 30° h= height of the building= 35 m

Q: Q2. Here is a plot of the velocity vs. time for an car. Take a look at the plot and answer each of…

A: The y axis is for velocity in m/s and the resolution is 2 m/s. The mid point of each block is…