When a battery is connected to a circuit, the electrons from the anode travel through the circuit toward the cathode in a direct circuit. The voltage of a battery is synonymous with its electromotive force, or emf. This force is responsible for the flow of charge through the circuit, known as the electric current.
The image is missing, so i have attached it.
Answer:
Correct answer is Option C - Ticking clock
Explanation:
Sound waves are formed when a vibrating object makes the encompassing medium to vibrate. Where the medium is the material in which the wave goes through. Sound waves comprise of zones of high and low weight called compressions and rarefactions, separately.
Now, in this question, the image given is one of compression and rarefactions. Looking at the options given, the correct option that produces such a wave is Ticking clock because Sound energy travels through air in waves and when an alarm clock rings, nearby air molecules vibrate. The air molecules jiggle about and cause neighbouring molecules to vibrate as well, thereby starting a wave of energy that travels out from the clock. The wave of sound travels in a pattern of compressions (where the air molecules are squeezed together) and rarefactions (where the air molecules are stretched apart).
Answer:
Attractive Property – Magnet
Explanation:
attracts ferromagnetic materials like iron, cobalt, and nickel. Repulsive Properties – Like magnetic poles repel each other and unlike magnetic poles attract each other. Directive Property – A freely suspended magnet always points in a north-south direction.
Answer:
145 m
Explanation:
Given:
Wavelength (λ) = 2.9 m
we know,
c = f × λ
where,
c = speed of light ; 3.0 x 10⁸ m/s
f = frequency
thus,
substituting the values in the equation we get,
f = 1.03 x 10⁸Hz
Now,
The time period (T) =
or
T = = 9.6 x 10⁻⁹ seconds
thus,
the time interval of one pulse = 100T = 9.6 x 10⁻⁷ s
Time between pulses = (100T×10) = 9.6 x 10⁻⁶ s
Now,
For radar to detect the object the pulse must hit the object and come back to the detector.
Hence, the shortest distance will be half the distance travelled by the pulse back and forth.
Distance = speed × time = 3 x 10^8 m/s × 9.6 x 10⁻⁷ s) = 290 m {Back and forth}
Thus, the minimum distance to target = = 145 m
Answer:
Explanation:
Under the definition of force on a magnetic field we proceed to make the point a,
A)
Since the field is perpendicular, then \theta = 0
b) The direction of the magnetic field would be done in + Zdirection. This when understanding that the vector extends along the z + axis of the formula