2. Which of the following describes absolute zero? It is the temperature needed to create liquid helium. It is the temperature of the core of Earth. 4 It is the temperature at which an object is not moving. OIt is the coldest temperature that scientists have ever measured.

Q: : Answer Al Determine the current IX in the Fig.7: 5A Ix 2A 08A 05A 04A ONone 1A Fig.7

A:

Q: 1. A 64.0-kg person stands on a bathroom scale that is on the floor of an elevator. The scale reads…

A:

Q: In the figure below, which of the following equations is correct according to the first condition of…

A:

Q: The forces acting on a wooden block are shown in the figure given alongside. Find the resultant of…

A: Upward force, Fup = 8 + 14 = 22 N Downward force, Fdn = 22 + 2 = 24 N

Q: How much heat in Joules is required to raise the temperature of 0.52kg of water from 17C to 62C ?…

A:

Q: When a moving particle remains on a single straight line, the motion is .called rectilinear TO FO

A: Concept    Rectilinear motion:- The motion of an object is said to be rectilinear if only one axis…

Q: Find the moment of mass from the x-axis for y = x ln(x) - 3x and y = 1 bounded by x = 3 and x = 6.…

A:

Q: A 210-N mass is suspended from a horizontal beam by two cables that make angles of 29° and 53° with…

A:

Q: Why are the silicates the most abundant mineral group in the Earth's crust? Explain in no more than…

A: The various  and abundance of the silicate minerals is produce a nature of the silicon atom, and…

Q: Consider Plates I, II, and III shown below which are all made of metal. Which of the following…

A: Motional EMF is induced when a conductor moves in a mgnetic field or when a magnetic field moves…

Q: An electronic flashgun has a capacitor with capacitance C that is charged to a voltage V. Answer the…

A: Capacitance, C = 1441 μF  Voltage,V = 317 V Time, t= 0.0032 s

Q: A lorry of mass 15 tonnes is travelling along a straight horizontal road. The lorry has a constant…

A: Solution:-

Q: Velocity at which the force resistance is just equal and opposite to the weight of the body called…

A: Say we have an object having weight W moving with some velocity v which experiences a resistive…

Q: Calculate the rotational inertia of a meter stick, with mass 0.516 kg, about an axis perpendicular…

A: GIVEN : Mass of stick =0.516Kg  let the length of stick = 1m=100cm

Q: Electrical energy of approximately 1.00 x 1019 J is used annually in the United States. How much…

A:

Q: What would be the mass of an object that weighted 200N?

A: Given data :                    Acceleration due to gravity    =    g                      Weight…

Q: The Atwood machine consists of two masses hanging from the ends of a rope that passes over a pulley.…

A:

Q: 5.6 Apparent Weightlessness and Artificial Gravity A rotating space station simulates artificial…

A: Height at which ball is dropped is 1.20m Let height be h  And h = 1.20m Speed of ball just before it…

Q: In figure 7, obtain the mesh equations. If e1 = e2=e3 = 1V and all resistances are equal to each…

A: According to kirchoff's voltage law (KVL) the sum of voltage drop in a closed loop is equal to zero.…

Q: -1 m-x 1 m 2 m- In the diagram on the right, a plank weighing 120 N is supported by two trestles at…

A: Given:-  In the diagram given below, A plank weight  Wp = 120 N, and it is supported by the two…

Q: The water pressure at the base of a water tower is 107.5 psi. What is the head of water

A:

Q: The angular acceleration of a wheel is a = 8.0t4 - 4.0t², with a in radians per second-squared and t…

A:

Q: 34- C 3R EF ww R An uncharged capacitor with a capacitance C is connected to a circuit as shown in…

A:

Q: Sphere A has a net positive charge and Sphere B has no net charge. What happends between the spheres…

A: Sphere B will become negatively charged. i.e. if charge on the sphere A is +q then charge of -q will…

Q: Calculate the shortest wavelength of light emitted by the hydrogen atom.

A: Wavelength

Q: A small car of mass 1200 Kg is moving with initial velocity v2i = + 22 m/s collides the back of a…

A:

Q: 44. Which of the following are the source of Magnetic Field?  a.   Permanent Magnets  b.   Earth  c.…

A: Magnetic Field: A magnetic field can be defined as the physical field around a magnet. These…

Q: Calculate the Thevenin equivalent resistance for the network across R₁. Given that R₁ = 3, R₂ = 6,…

A:

Q: A radio station transmits radio waves with a frequency of 1200 kHz. What is the wavelength of the…

A: Given that; f=1200 kHz=12 ×105 Hzc=3×108 m/sλ=?

Q: A ball is projected with velocity 10 m/sec at angle of 30° with the horizontal surface. The time…

A:

Q: To produce higher induced EMF, one should * I. Use a stronger magnet II. Increase the speed of the…

A: Electromagnetic induction is a process of generating emf in a circuit due to a change in magnetic…

Q: What is the weight of a 40kg object?

A: Introduction :  In this question we are provided with value of mass and acceleration due to…

Q: A meter stick balances horizontally on a knife-edge at the 50.0 cm mark. With two 4.02 g coins…

A:

Q: A coil having a resistance of 20Ω and an inductance of 150 mH is connected series to a 50 µF…

A: Given coil having a resistance =  R = 20Ω coil having an inductance = L = 150 mH  coil having…

Q: Determine the magnitude F and direction 8 (measured clockwise from the positive y-axis which is…

A:

Q: A -4 nC point charge is located at -3 m along the x- axis. What is the electric potential at the…

A:

Q: Convert 22.19 Fahrenheit to Kelvin

A:

Q: A -4 nC point charge is located at -3 m along the x- axis. What is the electric potential at the…

A:

Q: If the speed of a car is increased by 70%, by what factor will its minimum braking distance be…

A: Consider the speed of the car in the first case is v.

Q: If the energy received by 5 m² area in 560 seconds is 2880 KJ. Calculate the value of Solar constant…

A: Introduction :   In this question we are provided with value of area , time and energy. With these…

Q: A 1.50×103 kg car, whose front is facing to the right (towards +x-axis) and whose engine is turned…

A:

Q: Describe a simple experiment

A: Given;  Describe with simple experiement,  Molecules are not at rest but they constantly move.

Q: The blades in a blender rotate at a rate of 6200 rpm . When the motor is turned off during…

A: Given: The intial angular speed is 6200 rpm. The final angular speed is 0 rad/s. The time interval…

Q: to the right (towards +x-axis) and whose engine is turned off and in neutral, is held at rest on a…

A:

Q: A machine does 185 J of work in 20 seconds. Find the power of the machine?

A:

Q: An automobile traveling 97.0 km/h has tires of 78.0 cm diameter. (a) What is the angular speed of…

A: Given the speed of auto mobile, v=97.0 km/h=26.94 m/s diameter of tire d=78.0 cm=0.78 m therefore,…

Q: The sound waves travel with speed of 560 m/s. If is wavelength is 12 m. Find the frequency of wave?

A: We have a sound wave that travels with a velocity v=560 m/s and has a wavelength λ=12 m. We need to…

Q: 17. According to the Len’s Law, the direction of the magnetic field induced by a current always have…

A: To discuss Lenz law.

Q: plane travels N 30o W at an air speed of 600 kph. If the wind has a speed of 80 kph on a direction…

A:

Q: Using the approach discussed in the text, calculate the energy expended per second person running at…

A: Given speed of person, v=3 m/sMuscle efficiency=20 %Mass of leg, m=11 kgStep length=1 m

Special Relativity

The theory of special relativity discusses how space and time are related to objects traveling along a straight line at a constant speed. Simply stated, as an object reaches the speed of light, its mass becomes infinite and it is unable to move faster than light. This interstellar speed limit has been the topic of much debate in astronomy, and also in science fiction when people consider how to fly over large distances.