20- Under resting conditions, the body energy which is being used by the brain is 19%. true false

Q: A centrifuge slows down from 961rpm to 313rpm in 1616 seconds. Assuming constant angular…

A:

Q: A sealed container isolated from its environment holds 0.735-kg of water at 13.5°C. A heater inside…

A:

Q: Q1A)The vectors A = 3i+j+ 4k, B = 2i - 3j-k, find vector normal to A and In plane of A and, B.

A:

Q: A single reduction gear of 120 kW with a pinion 250 mm pitch circle diameter and speed 650 r.p.m. is…

A: in this question  we use power , torque  equation then use tangential load and get total load .

Q: A soccer player kicks a rock horizontally off a cliff 48.0 m high into a pool of water. If the…

A:

Q: When a 60-watt light bulb is connected to a 120-volt source the current in the light bulb is…

A: Given data:  Power (P) = 60 W Voltage (V) = 120 V Required: Current (I)

Q: Part A Part complete What is the capacitance? Express your answer in picofarads.  Correct Part B…

A:

Q: Two identical closely spaced circular disks form a parallel-plate capacitor. Transferring 2.1×109…

A:

Q: A block of mass m=3.9kg is placed on a rough inclined surface making an angle of θ=38o with the…

A: The work done by a force is given as W=F→.S→Where F is applied force and S is the displacement The…

Q: Find the momentum of a bullet of 40 kg when it is fired from a gum with a velocity of 124 m/s.

A: Given- mass, m= 40 kg velocity, v = 124 m/s

Q: ) A 1300 kg car moving on a horizontal surface has speed v= 77 mile/h when it strikes a horizontal…

A:

Q: Water flows through a horizontal pipe with sections of different diameters. If section A has twice…

A:

Q: A converging lens has a focal length of x. An object, represented by the arrow, is placed at point A…

A:

Q: An accident occurs at the intersection of a road. A 4971 kg jeepney moving south at 26.8 m/s…

A: We have a car of mass m1=4971 kg moving with a velocity v1=26.8 m/s due south (-y direction) which…

Q: A parallel-plate air capacitor with a capacitance of 260 pF has a charge of magnitude 0.153 μC on…

A: in this question  we use simple equation  of capacitance.

Q: A machine raises a load of 430 N through a height of 10 m in 5 sec. Calculate: 1. Energy spent by…

A:

Q: -10 2 15 10 5 -15 -20 v = f. L x (cm) 10 f = frequency L = wavelength The graph above shows a…

A:

Q: Find the momentum of a bullet c kg when it is fired from a gum w velocity of 124 m/s

A:

Q: A bedly bes 40 J of workin What is its power? 6 S.

A: Given in question:     Work done by baby(W) = 40 Joule…

Q: Displacement vector A is 4.5 km, North. Displacement vector B is 3.0 km, 50 degree North of West.…

A: Given:-  Displacement vector A is 4.5 km, North. The Displacement vector B is 3.0 km, 50 degrees…

Q: the point in space which is far from the electric charge has ____ electric potential compared to…

A: The electric potential at a point due to an electric charge is the amount of work done in moving a…

Q: WHAT ARE THE SOURCES OF MAGNETIC FIELD?

A: Sources of magnetic field are :  (i) Electromagnet. (ii) Permanent magnet. (iii) Current - carrying…

Q: Determine the Work Function(in eV) of gold if the smallest wavelength of light that can shine on…

A:

Q: cone is resting on a tabletop as shown in the figure with its face horizontal. A uniform electric…

A:

Q: Calculate the wavelength at 32m/s of a frequency of a traveling of 6 Hz.

A: Introduction :  In this question we are provided it value of frequency and wave speed . With these…

Q: Given the plot of distance versus time below. At which time is the object not moving? 20 15 10 5 0 1…

A: Let's check each option one by one A. 1.5 s At 1.5 second the graph is not parallel to time axis…

Q: 49.0-kg person, running horizontally with a velocity of +2.82 m/s, jumps onto a 15.6-kg sled that is…

A:

Q: A boy walks uniformly along the sides of a rectangular park with dimensions 400m x 300m, starting…

A: A boy walks uniformly along the sides of a rectangular park with dimensions 400m x 300m, starting…

Q: A fountain sends water to a height of 100 m. What must be the pressurization (above atmospheric) of…

A:

Q: An object has mass 96_g. It is made of a metal alloy with specific heat 320 J/kg-°C, and it has…

A:

Q: v) Check Question 5: Radioactivity (See textbook Chapter 6 - Exercise 4) Natural uranium is a…

A:

Q: An electron with an initial speed of 340,000 m/sm/s is brought to rest by an electric field.…

A:

Q: An unstretched spring is 10 ft long. A pull of 40 lb stretches the spring by 1/2 ft. Find the work…

A:

Q: A machine raises a load of 410 N through a height of 12 m in 2 sec. Calculate: 1. Energy spent by…

A:

Q: A current of8.83 A in a long, straight wire produces a magnetic field of 7.33 μT at a certain…

A:

Q: Please describe the nature given the two positive charges, the magnitude of charge, voltage values,…

A: Two charges of same nature repel each other while the charges of opposite nature attract each other.…

Q: A vertical solid disk of uniform mass M = 7 kg and radius R = 0.5 m is pivoted from point O as shown…

A:

Q: he belayer is lowering a climber so that they move downwards with a constant speed (no…

A:

Q: A flat, 194194 turn current‑carrying loop is immersed in a uniform magnetic field. The area of the…

A:

Q: 9 If the resistors given in the table are connected in parallel, what is the value in Cell A?…

A:

Q: A 1300 kg car moving on a horizontal surface has speed v= 77 mile/h when it strikes a horizontal…

A:

Q: A thermometer reading 45°C is brought outside where the temperature is 25°C. Five minutes later, the…

A: Given in the question:Outside temperature=25o CReading of the thermometer=45o C

Q: What is the tangential acceleration of a bug on the rim of a 10.0 inch diameter disk if the disk…

A: Given:-   A bug on the rim of an r = 10.0-inch= 0.254 m  diameter disk if the disk accelerates…

Q: Find the momentum of a bullet of 40 kg when it is fired from a gum with a velocity of 124 m/s.

A: Given in question -  Mass of bullet(m) = 40 Kg                                   Velocity of the…

Q: A solid, horizontal cylinder of mass 15.0 kg and radius 1.00 m rotates with an angular speed of 6.00…

A:

Q: A monochromatic ray of light passes from one medium into another medium with a larger index of…

A: Given: The first medium is rarer. The second medium is denser.

Q: a) Find the work done by friction between x=O and x = 4m b) Find the work done by the force F…

A: in this question  we use FBD of block and find equation  then solve that and get answer.

Q: Given two capacitors having the same capacitance of 10F each and a total electric potential of 150…

A:

Q: HOW DO YOU DETERMINE THE ELECTRIC FIELD INTENSITY ON A POINT CHARGE DUE TO KNOWN ONE OR MORE CHARGES…

A:

Q: A converging mirror has a focal length of x. An object, represented by the arrow, is placed at point…

A: We have that object is located at focus of the concave mirror.  Concave mirror : A concave mirror…

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.