What is the function of a photogate and how does the mechanism work?

Q: A dolphin wants to swim directly back to its home bay, which is 0.800 km due west. It can swim at a…

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Q: What resonant frequency would you expect from blowing across the top of an empty soda bottle that is…

A: Solution: The frequency of a closed tube is given by: f=v4L............................ (i) Here, v…

Q: Question 5 Rolling along a surface with an applied force and friction but accelerating to the right.…

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Q: The magnetic field of a wave is given by: Image Determine the expression for the electric field of…

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Q: What is the torque by the fire extinguisher about the center of the seesaw, in N-m? Use g = 10 m/s².…

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Q: After skiding down a snow-covered hill on an inner tube, Ashley is coasting across a level snowfield…

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Q: The system shown below is in equilibrium, with the string in the center exactly horizontal. Block A…

A: On left side applying second law of Newton, T1 Cos φ = 40 N (along +y)  T1 Cos 35° = 40 N  T1 =…

Q: Temperature is commonly measured with liquid-in-glass thermometers, wherein the liquid contracting…

A: There are various measures of degree of hotness or coldness. The temperature of a body is generally…

Q: How much power is needed to accelerate a 10 kg block from rest to 4 m/s in 2 s?

A: Given data:  Mass (m) = 10 kg Initial velocity (u) = 0 m/s Final velocity (v) = 4 m/s Time (t) = 2 s…

Q: A truck starts from rest and moves at a constant acceleration of 5 m/s. The speed of the truck in 4s…

A: Acceleration of the truck, a= 5 m/s The initial speed of the truck, u=0 m/s The truck is moving at a…

Q: The moment of inertia of a uniform rod (about its center) is given by /= ML2/12. What is the kinetic…

A: Given: The mass of the rod is 450 g = 0.45 kg.                                      {  1 g = 0.001…

Q: The value of the fill factor for a solar cell operating at a temperature of 300k has R_s=3 ohms and…

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Q: The battery below has a potential difference of 568 V. 8. 9. 4.00 cm 4.00 cm Use the following…

A: Let, Potential at level C be VC = 568 V Potential at level D be VD = 0 V Therefore the potential…

Q: A voltmeter connected across the terminals of a tungsten-filament light bulb measures 113 V when an…

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Q: What do you know about the difference between Newtonian, Lagrangian and Hamiltonian in describing…

A: There some basic deffierence between Newtonian lagrangian and Hamiltonian mechanics. Below some…

Q: With a 670.00 Hz tuning fork, you measure a distance of  15.00 ± 2 cm between adjacent nodes. If the…

A: in this question  we use simple velocity equation with frequency and wavelength.

Q: Temperature is commonly measured with liquid-in-glass thermometers, wherein the liquid contracting…

A: In this question we have to answer a true/false question related to thermometer. Please give…

Q: In figure below left, the current in the long, straight wire is I₁=5.00 A and the wire lies in the…

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Q: Problem 5. An object is moving with an initial position of 28m from the origin with an initial…

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Q: On average, both arms and hands together account for 13% of a person's mass, while the head is 7.0%…

A: The following problem belongs to the topic of angular motion. It also involves the concept of Law of…

Q: At the beginning of 2006, the rate of energy consumption for the city of Denver was 7000 megawatts…

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Q: A 210-km-long high-voltage transmission line 2.0 cm in diameter carries a steady current of 1,060 A.…

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Q: An object with a rest mass of 1.5 kg is moving at a speed of 0.91c. (a) Determine the relativistic…

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Q: The three charges in the figure below are at the vertices of an isosceles triangle. Let q = 3.50 nC…

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Q: An object of mass m is hanging by a string from the ceiling of an elevator. The elevator is moving…

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Q: (SOLUTION IS REQUIRED) Determine the distance of separation between charges 3 µC and 6 µC if the…

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Q: A bee flies 2 km [E] in 400s, then 4 km [E 75 degrees] in 2 000s. Calculate the speed and velocity…

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Q: In the metric engineering system a common unit is the kilojoul force per square centimeter. True O…

A: the kilojoul force  per square centimeter is not  having the unit of  any physical quantity.…

Q: Positive wo Consider these diagrams. Which situation requires the most work? P P P B.) C.) R·K•L V V…

A: The total area under the curve on a PV diagram is equals the total work done.

Q: An archer fish spies a meal of a grasshopper sitting on a long stalk of grass at the edge of the…

A: Given:-  The fish is to successfully spit at and strike the grasshopper, which is R = 0.200 m away…

Q: The figure below shows a metal bar moving to the right along conducting rails in uniform B- field…

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Q: A typical lightning bolt may last for 0.197 s and transfer 1.13 x 1020 electrons. Calculate the…

A: Time ( t ) = 0.197 s  Number of electrons ( n ) = 1.13 * 1020 electron

Q: For the circuit shown in the figure, determine the (a) equivalent resistance. [Select] (b) current…

A: R1 = 3 ohm R2 = 4 ohm R3 = 5 ohm R4 = 1 ohm R5 = 2 ohm V = 12 volts

Q: A finite difference solver uses a 2nd order approximation to the 2nd derivative, as shown below.…

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Q: Use the letter associated with each of the following FBD's Fnorm Ffrict A. B. Ffrict Ffrict C. D. E.…

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Q: Determine the direction of the magnetic force acting on each part of the conductor, then indicate…

A: Given:The magetic poles and current loop positions along with direction of electronic…

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Q: Determine the magnetic field at a point P located a distance x from the corner of an infinitely long…

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Q: Question 7 A car is coasting to the right but slowing down. ос F A G D E B Question 8 A ball is…

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Q: (SOLUTION IS REQUIRED) Two identical pieces of rectangular wood (k = 0.12 W/m.C°) of sides measures…

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Q: A ball travels in uniform circular motion with a Period of 2 seconds. What is the tangential…

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Q: We usually assume that the mass of the pendulum arm is negligible compared to the mass hung from it.…

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Q: Which one of the following statements is TRUE about the angle between the peak voltages V₁ and Vc…

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Q: Abody of unknown mass is attached to an ideal spring that is mounted horizontally with its left end…

A: Given that, Spring constant (k)= 120 N/m Frequency (f)= 6 Hz Let the time period be T Angular…

Q: For how long should a force of 52 N be applied to change the momentum of an object by 9 kg.m/s?

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Q: A block of wood of mass 0.95 kg is initially at rest. A bullet of mass 0.050 kg traveling at 100.00…

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Q: If a fly collides with the windshield of a fast-moving bus, which experiences an impact force with a…

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Q: What resonant frequency would you expect from blowing across the top of a soda bottle that is 20 cm…

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Q: A quantity of oxygen gas is slowly compressed adiabatically in an insulated container to two-thirds…

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Q: stone is dropped into a well. the splash is heard 1.24 s later. what is the depth of the well?

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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.