Why are light bulbs brighter in a parallel circuit? When the bulbs are in parallel, each bulb sees the full voltage V so P=V2R. Since a bulb glows brighter when it gets more power the ones in parallel will glow brighter. See, the parallel combination of resistors reduces the effective resistance of the circuit. Hence […]
How do I know if my electric motor brushes are bad?
Has a hurricane ever hit Mississippi?
Has a hurricane ever hit Mississippi? 1969: Hurricane Camille Hurricane Camille is one of just four Category 5 storms to make landfall in the continental United States, according to the National Weather Service. The storm made landfall near Waveland, Mississippi, in August 1969. Storm surge reached almost 25 feet in parts of Mississippi. What was […]
What is the force acting on the ball?
What is the force acting on the ball? The forces are the weight, drag, and lift. Lift and drag are actually two components of a single aerodynamic force acting on the ball. Drag acts in a direction opposite to the motion, and lift acts perpendicular to the motion. What is the action force acting on? […]
What rate is the length of the shadow changing?
What rate is the length of the shadow changing? We’ve determined the instantaneous rate of change in the position of the shadow, which is -160 ft/sec, but that figure changes dramatically as the bird moves closer to the ground (and the mouse). In which case the length of the shadow of the tree will be […]
How big of a telescope do you need to see planets?
How big of a telescope do you need to see planets? Telescopes that have 4 or 5 inch diameters are great for viewing solar system objects like the planets, our Moon, and Jupiter’s moons. Viewing Neptune and Uranus can be difficult with a scope this small but it’s not impossible. A telescope of this size […]
When two waves interfere destructively what changes?
When two waves interfere destructively what changes? This is known as destructive interference. In fact, if the two waves (with the same amplitude) are shifted by exactly half a wavelength when they merge together, then the crest of one wave will match up perfectly with the trough of the other wave, and they will cancel […]
Is it possible to see radio waves?
Is it possible to see radio waves? The electromagnetic spectrum describes all of the kinds of light, including those the human eye cannot see. Other types of light include radio waves, microwaves, infrared radiation, ultraviolet rays, X-rays and gamma rays — all of which are imperceptible to human eyes. Why do pulsars spin so fast? […]
Which solid has the highest melting point?
Which solid has the highest melting point? tungsten Do impurities lower melting point? The presence of even a small amount of impurity will lower a compound’s melting point by a few degrees and broaden the melting point temperature range. Because the impurity causes defects in the crystalline lattice, it is easier to overcome the intermolecular […]
Why the motion of pendulum will not be a simple harmonic motion?
Why the motion of pendulum will not be a simple harmonic motion? Any pendulum undergoes simple harmonic motion when the amplitude of oscillation is small. The pendulum still oscillates, but the motion is no longer simple harmonic motion because the angular acceleration is not proportional to the negative of the angular displacement. Why is the […]