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Junior high studetn needs help with understanding concept behind grvaity. Help with following basic questions in simple terms please.
1. Imagine you started to walk towards the west. Imagine that you can walk forever and that you can even walk on water. If you walk in the same direction forever, what will happen? Where will you end up?
2. Imagine that there is a big hole that tunnels al the way through the center of the earth vertically. If you drop an apple down this hole what would happen? explaine answer using terms of gravity, air resistance.
3. Usiing the same thought from the above problem, only the tube is running horizontally through te center of the earth, what would happen if you dropped an apple.
4. What kinds of things have gravitational forces?
5. Are there any places in the universe where gravity does not exist?
Two radioactive nuclei A and B are present in equal numbers to begin with. Three days later, there are 2.99 times as many A nuclei as there are B nuclei. The half-life of species B is 2.11 days discover the half-life of species A (in days).
A Doppler blood flow unit emits ultrasound at 5.0 mHz. What is the frequency shift of the ultra sound reflected from blood moving in an artery at a speed of 0.20 m/s?
A diver springs upward from a boardthat is three meters above the water. Determine her initial velocity, both magnitude and direction
A beam of light is incident from air onto a flat piece ofpolystyrene at an angle of 52^{\circ} relative to a normal to the surface. What angle does the refracted ray make withthe plane of the surface?
why is it advisable to make use of a proper restraining seat rather than hold a child on your lap.
A potential cannon is created to shoot charged balls straight upward. What is the maximum height, above the end of the cannon, it will reach
A solid, uniform ball of mass 16.9 kg and radius 0.35 m, rolls without slipping up a hill of height 16.5 m, as shown in the figure. At the bottom of the hill the ball has a velocity of 26.1 m/s. At the top of the hill, it is moving horizontally, a..
An 8 g bullet is fired into a 2.5 kg ballistic pendulum and becomes embedded in it. If the pendulum raises a vertical distance of 6cm, compute the initial speed of the bullet.
A 9250 kg bridge going east-west is supported by two pillars. The bridge is 47.0 m long with a pillar 5.0m from the west end and 10 meters from the east end. How much force is applied on each of the pillars?
q1. a brick is thrown upward from the top of a building at an angle of 45deg to the horizontal and with an initial
On a frictionless air track, a 0.140 kg glider moving at 1.35 m/s to the right collides with and sticks to a stationary 0.245 kg glider. What must be the net momentum of this system after the collision
If the exospheric temperature is 1500 K and the hydrogen atom and helium atom densities at 500 km are 10^4 cm^3 and 10^6 cm^3 respectively,
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