The total momentum of a system is conserved if the only forces of interaction regarding the objects under consideration are due to the objects themselves.   True or False

Q: The radius

A: Given; Find the radius of the path ?  Where,  Alpha particles m=6.7×10-27kg , q=+2ePotential…

Q: A cart is loaded with a rock and pulled at constant speed along an inclined plane to the height of a…

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Q: 14 ohms takes a current of A .find the heat developed in 20 seconds.

A: Heat developed (H)=i2Rt----------------------(1) ANS: The heat developed in 20 sec is 280 Joule.

Q: For the situation shown in Figure calculate FL , the magnitude of the force exerted by the left…

A: According to our guideline ,we have to do the first question only. please upload other question…

Q: Determine if the statement is true or false. If false, write the word that is false and state what…

A: Introduction :- Here we need to comment about the given statement whether it is true or not. If it…

Q: Calculate the electrical energy consumed in Joules if a toaster of 86 W is used 250 seconds ?

A: Given data :                  Time    =    t                 Power    =    P             To find :…

Q: The rate of heat conduction out of a glass window on a winter day is rapid enough to chill the air…

A: Area of the glass window, A=4.43 m2 The thickness of the glass window, d=0.95 cm The temperature of…

Q: 1. In the figure below, forces A, B, C & D each have magnitude 50N and act at the same point on the…

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Q: How would you throw an egg without breaking it? A. Boil the egg B. Throw it against a net C. Throw…

A: How would you throw an egg without breaking it? A. Boil the egg B. Throw it against a net C. Throw…

Q: A potential difference of 24 V exists between two points in a circuit. What is the work done on a…

A: Given:- Potential difference between two points of the circuit is ∆V=24V Charge is q=1 C…

Q: A flaglet stick 10.0 cm long is placed 30.0 cm in front of a mirror of focallength +50.0 cm. The…

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Q: Given vectors ū = [-2,3,1] i = [1,2, –2] and w = [4, –2, –1] find: b) ü w b) the angle between i and…

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Q: Write true if the statement is correct. if the statement is wrong, Write the word or phrase that…

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Q: Explain how magnetic fields exert force on moving electric charges. Answer in 5 to 6 sentences.

A: When a charged particle moves in a magnetic field, then a force act on it which is called Lorentz…

Q: 8. The charge of an electron was derived from the electrical microbalance set up created by: a.…

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Q: The Thermistor advantages .A Very sensitivity .B Small mass

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Q: A bus is moving on a straight road 20 m/s. It is acceleration at 28m/s2 What will be it's velocity…

A: Given data :                     Acceleration    =    a                     Initial velocity    =…

Q: The voltage in circuit is 24 V and resistance is 5 ohms, find the current ?

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Q: thermal neutron with mass of 1.67 x 10^-27 kg travels at a speed of 2200 m/s. Calculate the de…

A: De brogkie wavelength is given as the the planck's constant divided by product of momentum (m×v) of…

Q: A human body can withstand approximately 10g of acceleration in a collision before death is likely.…

A: Given: The initial speed of the car is 55 km/h. The stopping distance is 26 m. The final speed of…

Q: An object is thrown horizontally from the top of a 14-m building and lands 60 m from the base of the…

A: height of building (h) = 14 m distance in horizontal direction (d) = 60 m

Q: 3. A crate of mass 10 kg is pulled up a rough incline with an initial speed of 1.5 m/s. The pulling…

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Q: An electric iron of resistance 14 ohms takes a current of A .find the heat developed in 20 seconds.

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Q: 5) In Figure 5, a stationary Radium nucleus spontaneously emits an a-particle (He-4 nu- cleus) with…

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Q: When 20 N of force is applied to a spring of natural length 2 m, the resulting compression is 0.5 m.…

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Q: An projectile is kicked from the ground level with an initial velocity of 51 m/s in the horizontal…

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Q: An infinite number of charges each equal to 1nC are placed along the x-axis at x-1, x=2, x=4,…

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Q: A spherical blackbody of 5 cm in radius is in equilibrium with its surroundings. It then absorbs…

A: 15) radius (r) = 5 cm power absorbed (P) = 50 kW

Q: 1. At a World Cup soccer game, a fan blows a 0.75 m long horn which is an open air column. What are…

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Q: The image represents the gaps between allowed energy levels for electrons. Which model best…

A: Explanation-      when electrons are in the different shells of an atom or artificial atom, it…

Q: The magnetic field 2 cm from a long, straight wire is 1 EXP -6 T. Thecurrent in the wire is (let…

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Q: Further problems on resistance and resistivity 1. The resistance of a 2m length of cable is 2.5Q.…

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Q: A body is projected at an angle of 30° to the horizontal with kinetic energy 40 J. What will be the…

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Q: Calculate Density of object of mass 210 kg which accupies space of 4 m3 ?

A: Given data :                         Velocity    =    v                           Mass     =    m…

Q: 5. Fill in the missing potential and kinetic energies in the diagram. Assume that the incline is…

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Q: The voltage in circuit is 24 V and resistance is 5 ohms, find the current ?

A: Write the given values with the suitable variables. V=24 VR=5 Ω Here, V is the voltage and R is the…

Q: A man weighing 750N climbs a flight of stairs which is 5 meters high. How much work does he do?

A: Given data:  Weight (mg) = 750 N Height (h) = 5 m Required: The work done (W)

Q: Given data : Mass = 40 kg Density = 2340 kg / m? Calculate the volume

A: Given data :                    Mass    =    m                    Density    =    D         To find…

Q: An electric iron of resistance 14 ohms takes a current of 5 A .find the heat developed in 20…

A: Given data :            Current     =     I           Resistance   =    R               Time   =…

Q: c) Three infinitely long, parallel wires are located at the corners of an equilateral triangle as…

A: Relative permitivity=10 Relative permeability=4 Current=100A

Q: 8. What is the mass defect of a fission reaction that releases 2.9 × 10^11 J of energy?

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Q: An object has a mass of 0.5 kg is placed in front of a compressed spring. When the spring was…

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Q: 2. The current density in a copper wire of diameter 1.5 mm ig 1.5x 10° A/m2. The number of free…

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Q: 11. Which of the following characteristics are true about a series circuit? 1. The current that goes…

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Q: 5. A particle of unknown charge obtains 0.042 J of kinetic energy as it moves from point A to point…

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Q: A spring has a natural length of 15 inches. A force of 10 lbs. is required to keep it stretched 5…

A: Given, A spring has a natural length of 15 inches. A force of 10 lbs. is required to keep it…

Q: Point PE h KE V A 500 kJ 220 kJ

A: mass = m = 750 kg mechanical energy = PE + KE = Constant

Q: An electric iron of resistance 14 ohms takes a current of A .find the heat developed in 20 seconds.

A: Given data: The resistance of iron is R=14 Ohms. The current taken by the iron is A,. The time take…

Q: (a)A rock is launched from the ground into the air. After 3 seconds the rock is observed to have a…

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Q: 1. An object of charge +2.0 ×10°C is located at the Cartesian origin, (Om,0m). A second object, of…

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