What is the direction of magnetic lines of force in a bar magnet? (a) The direction of magnetic field lines outside a bar-magnet is from North seeking pole to south seeking pole while inside the magnet it is from south to north seeking pole. Is swallowing a small magnet harmful? Swallowing a single magnet is […]
Is it true that feeling pain while lifting is a signal from your body that you are building muscle?
Is it true that feeling pain while lifting is a signal from your body that you are building muscle? The statement, ‘feeling pain while lifting is a signal from your body that you are buidling muscle’, is false. Feeling pain when lifting can be as a result of many factors. For instance, pain during lifting […]
Can the velocity of a particle change even if its speed is constant give examples?
Can the velocity of a particle change even if its speed is constant give examples? Give example. Yes. Even though its speed is constant, if it is not traveling in a straight line, the velocity can vary. Can an object have zero velocity but non zero acceleration? Acceleration is the change in velocity, not the […]
What is the highest on Richter scale?
What is the highest on Richter scale? In theory, the Richter scale has no upper limit, but, in practice, no earthquake has ever been registered on the scale above magnitude 8.6. (That was the Richter magnitude for the Chile earthquake of 1960. The moment magnitude for this event was measured at 9.5.). Where is the […]
What happens when things are heated differently?
What happens when things are heated differently? When heat is added to a substance, the molecules and atoms vibrate faster. As atoms vibrate faster, the space between atoms increases. The motion and spacing of the particles determines the state of matter of the substance. The end result of increased molecular motion is that the object […]
What is a black body topper?
Should I have airplane mode on or off?
Should I have airplane mode on or off? One way to help slow down battery drain is to turn Airplane Mode on. When your iPhone is on, even with the screen off, it is constantly searching for and monitoring data connections. Turning those connections off through Airplane Mode will save battery, allowing you to make […]
Which planet has the greatest eccentricity?
Which planet has the greatest eccentricity? Mercury How is Earth’s eccentricity calculated? The formula to determine the eccentricity of an ellipse is the distance between foci divided by the length of the major axis. What is the maximum allowed value for eccentricity? 0.057 Is Earth’s orbital eccentricity large or small? The eccentricity of Earth’s orbit […]
Why does the speedometer of a car read instantaneous speed?
Why does the speedometer of a car read instantaneous speed? The speedometer of a car read the instantaneous speed not the average speed. We know that average speed is the ratio of total distance to the total time.It changes during when the car is moving . What does the speedometer of the car measure? Speedometer, […]
Why are seawalls bad for beaches?
Why are seawalls bad for beaches? They’ve been shown to disrupt the natural pattern of beach replenishment along the coast. Seawalls also speed up erosion on bluffs, putting adjacent ocean-front property at risk. According to the California Coastal Commission, about a third of Southern California beaches are armored with seawalls. How long does it take […]