Physics

Electricity flows frompositive to positivenegative to positivenegative to negative positive to negative
2 Answers
In isoelectric focusing gel electrophoresis a. there is a pH gradient that parallels the electric field gradient b. particular care must be taken to ensure the same pH along the length of the gel c. the electric current is allowed to fluctuate d. the electric circuits of the apparatus must be very well insulated
1 Answer
Algunos estudiantes de tu promocin consideran que se debera aumentar el nmero de horas semanales de Educacin Fsica. Otros consideran que el nmero de horas debera mantenerse. Escribe un artculo de opinin en el que presentes tu punto de vista sobre este tema y al menos tres razones que justifiquen tu postura. Tu artculo se publicar en el peridico escolar La Voz. una ayuda plis :c
1 Answer
Please please helpjejejnebwbww
1 Answer
Question 5 of 10What must be the same for two resistors that are connected in parallel?
1 Answer
f an object has a mass of 200 kg and a weight of 1000 N, what is g?
1 Answer
why do black holes have a large gravitational pull that even light cannot escape from
2 Answers
7) A ball is thrown upward at an initial velocity of 8.2 m/s, from a height of 1.8 meters above the ground. The height of the ball h, in metres can be represented, after t seconds, is modelled by the equation h = 4.8t + 8.2t + 1.8. (a) Determine the height of the ball after 1.7 seconds.
1 Answer
given A=4i-10j and B= 7i+5j find b such that A+bB is a vector pointing along the x-axis (i.e has no y component)
2 Answers
20.In case the conductor is a heating appliance, then this energy(w) is converted into heat(H) i.e A. w=H C. w=I2RtB. w=VIt D. all of above
1 Answer
...............Is this correct? (the option is marked)
1 Answer
A student wants to start a small business in school. Write down six items thathe/she can sell in school at a profit.
2 Answers
Question 3 of 10Which image shows an example of the strong nuclear force inaction?A.B.C.D.
2 Answers
Hai in tch t cch nhau mt khong R trong khng kh th lc tng tcgia chng l 2.103N. Nu khong cch m t trong mi trng in mi thlc tng tc gia chng l 103N. lc tng tc gia hai in tch khi ttrong mi trng in mi bng lc tng tc gia hai in tch khi t trongkhng kh th khong cch gia 2 in tch l bao nhiu?
1 Answer
A car increase its speed steadily from 30km/hr to 60km/hr in 1 min A what is the average speed during this time
1 Answer
A conductor is placed in a steady external electric field. Which of the following is FALSE?a) All excess charge is distributed on the surface of the conductorb) The electric field inside the conductor is the same as the external electric fieldc) The electric field is zero inside the conductord) the electric field just outside the surface of the conductor is perpendicular to the surface
1 Answer
A uniform, solid sphere of radius 2.50 cm and mass 4.75 kg starts with a purely translational speed of 3.00 m/s at the top of an inclined plane. The surface of the incline is 2.75 m long, and is tilted at an angle of 22.0 with respect to the horizontal. Assuming the sphere rolls without slipping down the incline, calculate the sphere's final translational speed v2 at the bottom of the ramp.
1 Answer
Calculate the magnitude of a gravitational force between two object 400kg and 800kg separated by a distance of of 45m (take G =6.67 * 10^-11 Nm^2 kg^-2)
1 Answer
A battery is two or more individual cells connected together. Some large trucks utilize large 24 volt lead acid batteries. How many lead acid cells would be required to construct a battery with this voltage
1 Answer
Which of the following can be correct units for acceleration?A. miles/hr/mB. Km/s/hrC. m/s/mD. km/m/s
1 Answer
which species are near extinctions and where do they live now?
2 Answers
Two circular coils are concentric and lie in the same plane.The inner coil contains 120 turns of wire, has a radius of 0.012m,and carries a current of 6.0A. The outer coil contains 150turns and has a radius of 0.017 m. What must be the magnitudeand direction (relative to the current in the inner coil) ofthe current in the outer coil, such that the net magnetic field atthe common center of the two coils is zero?
1 Answer
difference between wavefront and wavelets
1 Answer
Tnh cng ca dng in
1 Answer