If someone suggests placing a battery in the refrigerator to prolong its life, will you agree or not? Justify your answer.

Q: Activity Directions: In a series circuit, certain general rules may be stated with regard to…

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Q: A spotlight is mounted on a pole at the end of a fishing pier as shown below. If the light is…

A: We have light hitting the surface of the water from a height y=3.5 m and horizontal distance x=8.3 m…

Q: The figure below shows a 45° - 90° - 45° prism with a ray of light entering and exiting on the long…

A: Total internal reflection is defined as the process in which the rays of light incident on the…

Q: y A total charge Q = 1.9 µC is distributed uniformly over a quarter circle arc of radius a = 8.6 cm…

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Q: 5) a- -a a What is the magnitude of the electric field at the origin produced by a semi-circular arc…

A: In this question we have to find the magnitude of Electric Field at the origin produced by a…

Q: A small metal sphere has a mass of 0.11 g and a charge of -21.0 nC. It is 10.0 cm directly above an…

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Q: 4) # 8kg object speeds up from 20m/fee to som/sec in 6 secords. a) what is the acceleration b) what…

A: 4) mass of object (m) = 8 kg initial speed (u) = 20 msfinal speed (v) = 50 mstime (t) = 6 seconds

Q: Two polaroid A and B are kept with their transmission axes at an angle with respect to one another.…

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Q: As shown in the figure, a light beam travels from air, through olive oil, and then into water. If…

A: By snell's law  n1Sinθ1 = n2Sinθ2  1×Sinθ1 = 1.47×Sin34.2°  Sinθ1 = 0.826  θ1 = 55.69°

Q: 3/215 Determine the magnitude Ho of the angular mo- mentum of the 2-kg sphere about point O (a) by…

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Q: When a force F stretches a rope of mass per unit length p, the velocity of a wave in the rope is…

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Q: With what velocity must a ball be thrown vertically upward in to order to rise to a height of 50ft?…

A: height = h = 50 ft = 15.24 m acceleration due to gravity g = 9.8 m/s2 final velocity = V = 0 m/s…

Q: 5. The density of water at 4°C is 1,000 kg/m³. What is the water's density at 94°C? (where ß = 207 x…

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Q: A constant force P = 750 N acts on the body shown during only the first 6 m of its motion starting…

A: Given, Force, F = 750 N  initial speed of the block, u = 0 coefficient of friction, μ = 0.2

Q: The projectile shown has an acceleration which is: (K:1) P Select one: O a. in the direction of P O…

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Q: A scuba tank contains 20 L of air at 30°C and 1.5 am. Assuming that the temperature remains…

A: Q

Q: The temperature of a sample of gas in a steel container at 30.0 Pa is increased from -100.0 °C to…

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Q: A 15.0 m power line carries a current of 20.0 A perpendicular to the Earth’s magnetic field of…

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Q: How does resistance change if the length of the wire is increase? a. no change b. decreased c.…

A: Explanation-  Resistance is the property of material, which opposes the flow of current passes…

Q: A truck's wheel (r = 23 cm) turning at 111 rev/min increases its velocity to 335 rev/min within 14.4…

A: Given data :- radius r = 23 cm = 0.23 m initial angular velocity ω0 = 111 rev/min                 or…

Q: Sketch a PV diagram of the following process: 2.01 of ideal gas at atmospheric pressure are cooled…

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Q: A laser beam of power P in watts consists of photons of wavelength X in nanometers. Part A What is…

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Q: A wind turbine whose blades are 19 m is rotating counterclockwise at a rate of 0.12 rev/s. It…

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Q: Thank u A tank of compressed air of volume 1.00 m^3 is pressurized to 20.8 atm at T= 273 K. A valve…

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Q: Thank u! A steel sphere with radius 1.0010 cm at 34.0°C must slip through a brass ring that has an…

A: Using  thermal expansion formula find the temperature for the  brass to be heated  L=Lo1+α∆T Where,…

Q: Directions: Answer the following problem, write the given and the solution. Calculate the Hall…

A: Given Magnetic field (B) = 0.800 T Inside diameter of vessel's L = 4.8 mm    = 4.8 × 10-3 m Speed…

Q: The figure shows an electric dipole. What is the magnitude of the dipole's electric field at point…

A: As per our guidelines we are upposed to answer only one question. kindly repost other questions as a…

Q: Two charged particles are separated by 10 cm. Suppose the charge on each particle is doubled. Part A…

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Q: An apartment has a living room whose dimensions are 2.8 m x 5.2 m x 6.7 m. Assume that the air in…

A: By, ideal gas equation  PV = nRT  1.01×105×2.8×5.2×6.7 = n×8.3×(273+21)  n = 4037.68 moles

Q: 6. A stone was thrown horizontally at a speed of top of a cliff 78.4m high. a) How long did it t…

A: GivenInitial horizontal velocity of stone, ux=5 m/sHeight of cliff, h=78.4 m

Q: Imagine a ray of light passing between air (n~1) and glass (n~1.5). If the ray of light hits the…

A: Given Refractive index of air is nair=1 Refractive index of glass is nglass=1.5 Incident ray hit at…

Q: What are some realizations we can get after doing an experiment about the law of refreaction? Ex: an…

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Q: A 6 - m string wounded on the rim of a wheel (r = 10.28 cm) is being pulled out at a rate of 61…

A: length of string (L) = 6 m radius (r) = 10.28 cm= 0.1028 m v = 61 cmsec= 0.61 ms

Q: Suppose that the displacement d(in meters) of an object at tie t (in seconds) satisfies the equation…

A: Given data: The equation of displacement is, d=8-5cosπt

Q: A person lying on the bottom of a pool notices that he can see all of the above-water surroundings.…

A: Here we have to apply concept of total internal reflection  That when light goes from denser to…

Q: You are lying on your back on a drawbridge. The drawbridge suddenly begins to lift. As the angle…

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Q: An Athlete pulls a 30 kilograms crate along Lane A of the storage house. Lane A is a 15m  aisle.…

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Q: Red light has a frequency of 4.0 x 1014 Hz. a.Find the speed of red light in a vacuum if its…

A: a) speed of red light in vaccum (v) = f×λ  V = 4×1014×7.5×10-7  V = 3×108 m/s

Q: force of 2.9x1011 N exists between a +4.0 C charge and a -2.0 C charge. How far in space are the…

A: force of 2.9x1011 N exists between a +4.0 C charge and a -2.0 C charge. How far in space are the

Q: In the figure (Figure 1) the top wire is 1.2 mm -diameter copper wire and is suspended in air due to…

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Q: A body does 26 Joules of work in What is it's power? 4 seconds.

A: Given data :                Work done    =    W                Time  Taken   =    t        To find :…

Q: Determine the speed of sound on a cold winter day (T=3 degrees C).  Q2. Find out the speed of sound…

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Q: Estimate the time needed for a glycine molecule to diffuse 15 um in water at 20 degrees Celcius if…

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Q: On a frictionless horizontal floor, two objects collide. Object A, which is moving in a velocity of…

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Q: Three resistors of 50 , 100 2 and an unknown resistance R are connected in parallel and the…

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Q: What mass of water could be warmed from 21.9°C to 52.1°C by the pellet dropped inside it? Heat…

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Q: An object weighing 95 N is suspended by two wires, the left wire makes an angle of 37⁰ with the…

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Q: Two particles are fixed to an x axis: particle 1 of charge q₁ = 2.92 x 10-8 C at x = 16.0 cm and…

A: Since magnitude of q1 is less than q2 so point is close to q1 and to the left side of q1  Let point…

Q: i) Find the de Broglie wavelengths of a) an electron (m, = 9.1 x 10-31 kg) accelerated through a…

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Q: A uniform, 374.42-N rod is 10.63 n long carries a 203.39-N at its right end and an unknown weight W…

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Half Life

The concept of Half Life has numerous practical applications some of them includes figuring out the effective drug dosage to finding out when a radioactive becomes safe to use. If you look for a career in Nuclear Physics you will need this concept.