According to the collisional ejection theory, how did the moon form?
1. What causes day and night? (a) The Earth spins on its axis. (b) The Earth moves around the Sun. (c) Clouds block out the Sun's light (d) The Earth moves into and out of the Sun's shadow. (e) The Sun goes around the Earth. What answer is correct?
7. How often is the Sun directly overhead at noon in Toronto? (a) Every day (b) Only in the Summer. (c) Only for the week of the summer solstice. (d) Only for one day each year. (e) Never What is the correct answer?
Determine how far apart two cars must be on the ground if you are to have any hope of distinguishing between them with the following lighting.
You are looking down at the earth from inside a jetliner flying at an altitude of 9300 m. The pupil of your eye has a diameter of 2.00 mm. Determine how far apart two cars must be on the ground if you are to have any hope of distinguishing between them with the following lighting. red light (wavelength = 665 nm in vacuum)and vio
Question: At a certain location, the horizontal component of the earth's magnetic field is 4.6E-5 T, due north. A proton moves eastward with just the right speed, so the magnetic force on it balances the weight. Find the speed of the proton.
Briefly, discuss the aspects of electrical safety and shock.
Why solor and lunar eclipses don't occur each month?
A mass of 100kg weighs 980.6N at sea level. Estimate the weight of this body at the top of a mountain 5km high. Assume that the mean diameter of the earth is 12742km.
"How far above the Earth's surface will the acceleration due to gravity be a quarter of what it is on the surface?" I tried to use the g' = (G * m) / r^2 equation (with the mass of the earth as "m") because it was used with a somewhat similar problem in my book about the value of g on the top of Mount Everest, but I came up w
A 75.6 kg person stands on a scale in an elevator. What does the scale read (it reads mass units, not weight units) when the elevator is accelerating downward at 3.00 m/s^2?"
A jet flies at an altitude of 15,000m. What is the approximate air pressure at that height?
The mass of a certain elephant is 1,130kg. What is the elephant's weight in Newton's? Please show the work.
What is the acceleration of a meteor when it is at a distance of 6.7X10^6m from the center of the earth?
A rocket is accelerated to speed v = 2 sq. root gRe near Earth's surface (where Earth's radius is Re), and it then coasts upward. a) Show that it will escape from Earth. b) Show that very far from Earth its speed will be v = sq. root 2gRe.
How far from Earth must a space probe be along a line toward the Sun so that the Sun's gravitational pull on the probe balances the Earth's pull?
Here's the background of our experiment. Purpose: In this experiment you will use a current-carrying loop to determine the horizontal component of the earths magnetic field for our locality. (Massachusetts, USA) Apparatus: 1. Circular conducting loop 2. Compass 3. Power supply and powersate 4. Ammeter 5. Wires Theo
List the most important causes of surface erosion. Rate Earth, Venus, Mars and the Moon in order of decreasing rate of erosion.
The gravitational force on a body located a distance R from the center of a uniform spherical mass is due solely to the mass lying at distance r<R or r=R, measured from the center of the sphere. This mass exerts a force as if it were a point mass at the origin. Use the above result to show that if you drill a hole through the
A body weighs 98N on a spring balance at the North Pole. What will be its weight recorded on the same scale if it is shifted to the equator? Radius of earth is 6400km