You are travelling in a windowless spaceship at .85c. You check the watch you are wearing,...
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You
are travelling in a windowless spaceship at .85c. You check the
watch you are wearing,...
I'm just reading a book about gravity. An example it gives is a spaceship accelerating. A...
I'm just reading a book about gravity. An example it gives is a spaceship accelerating. A beam of light travelling at right angles to the direction of movement of the spaceship enters it via a small pinhole. The book states that the beam of light would appear to bend to an observer within the spaceship. Intuitively this makes sense - if the ship were travelling at 0.5c, for example, and was 10m across (from the pinhole to the opposing wall)...
A robot has fallen from a spaceship, as a result he is orbiting a far away...
A robot has fallen from a spaceship, as a result he is orbiting
a far away planet all by himself. The robot is in an elliptical
orbit with rmin = rR and rmax = 25rR /7, rR is the rescue orbit
radius. If the robot changes his orbit to a circle of radius rR
then he will be rescued. The robot has loose papers with him which
he can throw to change the orbit. M = mass of planet, m...
1.) You are in a spaceship at rest in deep space, outside the influence of any...
1.) You are in a spaceship at rest in deep space, outside the influence of any gravity. Without fuel, your vessel has a mass of 5,750 kg and its rocket engine expels exhaust at a speed of 8,250 m/s. You want to travel to an outpost that is quite far away, and you decide to accelerate to a speed of 12,500 m/s, coast for some time, and then slow down to a stop. A) What is the minimum mass of...
39. What happens to a spaceship flying through space with no engines and no external forces...
39. What happens to a spaceship flying through space with no engines and no external forces acting on the spaceship? A. It gradually slows down. B. It gradually speeds up. C. Its speed doesn't change. D. We have no idea what happens to the spaceship. 40. A 10-N horizontal force is applied to a box that weighs 24 N. If the box does not move on the horizontal surface (m.- 0.5), what is the force of friction? A. 5 N...
Your spaceship lands on an unknown planet. To determine the characteristics of this planet, you drop...
Your spaceship lands on an unknown planet. To determine the characteristics of this planet, you drop a wrench from 7.00 mm above the ground and measure that it hits the ground 0.812 ss later. Part A. What is the acceleration of gravity near the surface of this planet? Express your answer in meters per second squared to three significant figures. Part B. Assuming that the planet has the same density as that of earth (5500 kg/m3kg/m3), what is the radius...
Sling is a streaming television service that lets you watch live network TV (and local channels),...
Sling is a streaming television service that lets you watch live network TV (and local channels), including the ability to add “a la carte” channels so you don’t pay for channels you would never watch. It has three plans or options (though two are the same price even though Sling Orange has fewer channels and can only stream on one device at a time, and Sling Blue has more channels and can stream on three devices at one time) from...
3. I am driving at 20.0 m/s when (at time t 0 a car pulls out...
3. I am driving at 20.0 m/s when (at time t 0 a car pulls out onto the road, 50.0 meters ahead of me. I immediately start to brake, slowing down at 3.0 m/s. Meanwhile the other car, which started at rest, accelerates at 2.0 m/s At-4.0 s, I have slowed down to 8.0 m/s and the other car has sped up to 8.0 m/s; in those first four seconds I have moved 56.0 m and the other car has...
4) A repetitive wave travels at travels through water at 5m/s. You watch a warning buoy...
4) A repetitive wave travels at travels through water at 5m/s. You watch a warning buoy oscillates up and down as the ocean waves pass through its position. You measure 8 seconds for the buoy to move from its highest point to it lowest point and back The difference in height is 3.5 m from the lowest point to the highest point. A. What is the wavelength of the ocean wave ? B. What is the amplitude ? C. What...
You’ve been abducted by aliens! You wake up aboard a spaceship to find yourself completely immersed...
You’ve been abducted by aliens! You wake up aboard a spaceship
to find yourself completely immersed in a tank full of dense green
goo. The aliens are scanning you with a laser aimed at the tank, as
shown in the figure below. The tank has a shiny surface, but is
also clear enough for you to see the room around you and the laser
shining in. The incoming laser light ray hits the surface at an
angle.
a) Draw in...
Problem 2. (EXTRA CREDIT). You are riding up in the elevator of the Cathedral of Learning,...
Problem 2. (EXTRA CREDIT). You are riding up in the elevator of the Cathedral of Learning, tossing a coin 1 meter into the air above your hand. You watch it go up, reach the peak of its toss, and come back down into your hand, and it occurs to you to wonder: If people could watch its motion from outside of the elevator, what would they see it doing? Of course, they also would see that the elevator is moving,...
A robot has fallen from a spaceship, as a result he is orbiting
a far away planet all by himself. The robot is in an elliptical
orbit with rmin = rR and rmax = 25rR /7, rR is the rescue orbit
radius. If the robot changes his orbit to a circle of radius rR
then he will be rescued. The robot has loose papers with him which
he can throw to change the orbit. M = mass of planet, m...
1.) You are in a spaceship at rest in deep space, outside the influence of any gravity. Without fuel, your vessel has a mass of 5,750 kg and its rocket engine expels exhaust at a speed of 8,250 m/s. You want to travel to an outpost that is quite far away, and you decide to accelerate to a speed of 12,500 m/s, coast for some time, and then slow down to a stop. A) What is the minimum mass of...
39. What happens to a spaceship flying through space with no engines and no external forces acting on the spaceship? A. It gradually slows down. B. It gradually speeds up. C. Its speed doesn't change. D. We have no idea what happens to the spaceship. 40. A 10-N horizontal force is applied to a box that weighs 24 N. If the box does not move on the horizontal surface (m.- 0.5), what is the force of friction? A. 5 N...
3. I am driving at 20.0 m/s when (at time t 0 a car pulls out onto the road, 50.0 meters ahead of me. I immediately start to brake, slowing down at 3.0 m/s. Meanwhile the other car, which started at rest, accelerates at 2.0 m/s At-4.0 s, I have slowed down to 8.0 m/s and the other car has sped up to 8.0 m/s; in those first four seconds I have moved 56.0 m and the other car has...
4) A repetitive wave travels at travels through water at 5m/s. You watch a warning buoy oscillates up and down as the ocean waves pass through its position. You measure 8 seconds for the buoy to move from its highest point to it lowest point and back The difference in height is 3.5 m from the lowest point to the highest point. A. What is the wavelength of the ocean wave ? B. What is the amplitude ? C. What...
You’ve been abducted by aliens! You wake up aboard a spaceship
to find yourself completely immersed in a tank full of dense green
goo. The aliens are scanning you with a laser aimed at the tank, as
shown in the figure below. The tank has a shiny surface, but is
also clear enough for you to see the room around you and the laser
shining in. The incoming laser light ray hits the surface at an
angle.
a) Draw in...
Problem 2. (EXTRA CREDIT). You are riding up in the elevator of the Cathedral of Learning, tossing a coin 1 meter into the air above your hand. You watch it go up, reach the peak of its toss, and come back down into your hand, and it occurs to you to wonder: If people could watch its motion from outside of the elevator, what would they see it doing? Of course, they also would see that the elevator is moving,...
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