What is the upward force in newtons from a pressure difference on a roof of a 1.03 x 103 sq. ft. single story home in an F5 tornado (v=188 mph)?
Two vehicles, a 3,250-kg car and a 9,750-kg truck, are on a road 20.0 meters apart. a. Calculate the gravitational force between these two vehicles.
You push on a box and are unable to move it. What force opposes your push? Static friction Sliding friction Roling friction Air resistance
Describe the connection of three strings of patio lights. One whole string does not light, but all bulbs in the other two strings do.
A roller coaster of mass 20kg is rolling down a track with a velocity of 10m/s. what is the kinetic energy of the roller coaster
1. An object is projected horizontally at 17.0 m/s from the top of a 170.7 meter cliff. How far from the base of the cliff will the object strike the ground? 2. A student threw a ball horizontally out of a window 6.4 meters above the ground. It was caught by another student who was 15.4 meters away. What was the horizontal velocity of the ball? 3. A plane flying horizontally at 449 m/s releases a package at an altitude of 15,009 m. How long will the package take to reach the ground? 4. Napoleon’s cannon, having a muzzle velocity of 131 m/s, is fired at a 0 degree angle off a cliff. The ball lands 916 m away from the cannon. How far above ground level is the cannon? 5.A tennis ball is thrown straight up into the air with an initial velocity of 7.1 m/s. How long does it take to reach the top of the trajectory? 6. A tennis ball is thrown straight up into the air with an initial velocity of 13.5 m/s. How high does the tennis ball travel? 7. A boy standing on the bridge kicks a stone into the water below. He kicks the stone with a horizontal velocity of 9.95 m/s. It lands in the water 5.33 m away from the bridge. How high is the bridge? 8.A girl threw a ball straight up into the air with an initial velocity of 22.86 m/s. What is the final velocity of the ball at its highest point?
A train traveled 500 kilometers (km) from its starting point in 5 hours (h). If the train continues at the same average speed for another 2 hours, how far will it have traveled from its starting point?
Study the arrow that is circled in the image. The sun is in the sky. Clouds with blue arrows pointing down toward water. A circled arrow is pointing from the water inland. Red arrows are pointing up from the land to the sky. What happens at this point? A. Warm air is rising. B. Cool air is sinking. C. There is a difference in air pressure. D. Cool air is less dense than warm air.
The prism in the figure below is made of glass with an index of refraction of 1.52 for blue light and 1.47 for red light. Find R, the angle of deviation for red light, and B, the angle of deviation for blue light, if white light is incident on the prism at an angle of 30.0°. (Enter your answers in degrees.)
Read the resource about the International Space Station (ISS) located within the weekly readings. The space station orbits Earth about 400 km above the surface of Earth (NASA.gov). At this height the force of gravity from Earth is only about 10% less than on the surface of Earth. Using the concepts of circular motion and gravitational forces learned in this Topic; explain the following in your own words: Why does the space station not fall down? Why do the astronauts float inside the space station?
Sketch velocity–time graphs for an object: a moving with a constant velocity of 6 m/s b accelerating uniformly from rest at 2 m/s2 for 10 s c decelerating to rest at 4 m/s2 for 5 s.
