• Some of the organic material produced in estuarine systems is exported out of the estuary to other ecosystems.?

    In what form is this organic matter normally exported?
    In what form is this organic matter normally exported?
    2 answers · Biology · 2 weeks ago
  • What is the linear mass density of the string in kg/m?

    You take a set of measurements for the wavelengths and frequencies of standing waves on a string that is under a tension of 2.25 N. You use your data to create a plot of wavelength (in m) vs inverse frequency (in s) and the linear fit of your graph gives a slope of 19.5.
    You take a set of measurements for the wavelengths and frequencies of standing waves on a string that is under a tension of 2.25 N. You use your data to create a plot of wavelength (in m) vs inverse frequency (in s) and the linear fit of your graph gives a slope of 19.5.
    2 answers · Physics · 1 month ago
  • If you pushed the door 0.23m away from the hinge, with what force (in N) must you push the door to supply the same torque?

    You exit class. The door is 40 inches wide and has a mass of 200 kg. You push the door with a perpendicular force of 46.44N exactly 0.94m away from the hinge. This generates the minimum torque, T1, required to open the door.
    You exit class. The door is 40 inches wide and has a mass of 200 kg. You push the door with a perpendicular force of 46.44N exactly 0.94m away from the hinge. This generates the minimum torque, T1, required to open the door.
    2 answers · Physics · 2 months ago
  • Predict the Major product(s) for the following reaction and draw their corresponding detailed arrow-pushing mechanisms.?

    Could someone explain to me how I do this and what the mechanism is?
    Could someone explain to me how I do this and what the mechanism is?
    1 answer · Chemistry · 2 months ago
  • Predict the Major product(s) for the following reaction and draw their corresponding detailed arrow-pushing mechanisms.?

    Could someone explain to me how I do this and what the mechanism is?
    Could someone explain to me how I do this and what the mechanism is?
    2 answers · Chemistry · 2 months ago
  • Predict the Major product(s) for the following reaction and draw their corresponding detailed arrow-pushing mechanisms.?

    I just need someone to explain to me how to do this and what the mechanism is.
    I just need someone to explain to me how to do this and what the mechanism is.
    1 answer · Chemistry · 2 months ago
  • Find final speed in m/s and percent change in kinetic energy?

    A 12100 kg railroad car is coasting on a level, frictionless track at a speed of 19.0 m/s when a 4790 kg load is dropped onto it. If the load is initially at rest, find the new speed of the car and the percent change of the kinetic energy.
    A 12100 kg railroad car is coasting on a level, frictionless track at a speed of 19.0 m/s when a 4790 kg load is dropped onto it. If the load is initially at rest, find the new speed of the car and the percent change of the kinetic energy.
    3 answers · Physics · 2 months ago
  • Assuming a frictionless table, what is the magnitude of the final velocity of the second billiard ball in m/s due west?

    A billiard ball with mass 2.0 kg is shot due west at 8.8 m/s. The ball collides elastically with a second billiard ball, also of mass 2.0 kg. The second billiard ball travels due west, the same direction as the first billiard ball was traveling.
    A billiard ball with mass 2.0 kg is shot due west at 8.8 m/s. The ball collides elastically with a second billiard ball, also of mass 2.0 kg. The second billiard ball travels due west, the same direction as the first billiard ball was traveling.
    2 answers · Physics · 2 months ago
  • What is the final speed in m/s and the percent change in kinetic energy?

    A 12100 kg railroad car is coasting on a level, frictionless track at a speed of 19.0 m/s when a 4790 kg load is dropped onto it. If the load is initially at rest, find the new speed of the car and the percent change of the kinetic energy.
    A 12100 kg railroad car is coasting on a level, frictionless track at a speed of 19.0 m/s when a 4790 kg load is dropped onto it. If the load is initially at rest, find the new speed of the car and the percent change of the kinetic energy.
    1 answer · Physics · 2 months ago
  • For how long could the resulting energy light a 60 W light bulb?

    Suppose you were to drop a 13 lb bowling ball from the top of the Empire State Building, which is about 440 m tall, onto a machine that would catch it and then convert its kinetic energy into electrical energy.
    Suppose you were to drop a 13 lb bowling ball from the top of the Empire State Building, which is about 440 m tall, onto a machine that would catch it and then convert its kinetic energy into electrical energy.
    3 answers · Physics · 2 months ago
  • Suppose that you moved the sofa to its final position by moving it directly to the left. What is the work done by friction in this case?

    You are rearranging the furniture in your living room. In doing so, you push a 28 kg sofa to the left a total distance of 3.0 m and then you push it back to the right a distance of 1.0 m. The coefficient of kinetic friction between the sofa and the hardwood floor is 0.20. A. What is the work done by friction in moving the sofa? Answer: -220J B.... show more
    You are rearranging the furniture in your living room. In doing so, you push a 28 kg sofa to the left a total distance of 3.0 m and then you push it back to the right a distance of 1.0 m. The coefficient of kinetic friction between the sofa and the hardwood floor is 0.20. A. What is the work done by friction in moving the sofa? Answer: -220J B. Suppose that you had instead simply moved the sofa to its final position by moving it directly to the left. What is the work done by friction in this case? C. From the results obtained in Parts A and B, what can you conclude about the nature of the friction force? Is it a conservative force? EXPLAIN I found A, but need B and C
    2 answers · Physics · 2 months ago
  • From rest at a height of 0.25 m above the ground, what would the crate's speed be when it reaches the bottom of the ramp?

    In this example we will add friction to an inclined ramp. Of course, friction does work and we will need to determine its contribution to Wother. A crate full of machine parts sits on the floor; the total mass is 8.0 kg. The crate must be raised to the floor of a truck by sliding it up a ramp 2.5 m long, inclined at 30∘. The shop foreman, giving no... show more
    In this example we will add friction to an inclined ramp. Of course, friction does work and we will need to determine its contribution to Wother. A crate full of machine parts sits on the floor; the total mass is 8.0 kg. The crate must be raised to the floor of a truck by sliding it up a ramp 2.5 m long, inclined at 30∘. The shop foreman, giving no thought to the force of friction, calculates that he can get the crate up the ramp by giving it an initial speed of 5.0 m/s at the bottom and letting it go. Unfortunately, friction is not negligible; the crate slides 1.6 m up the ramp, stops, and slides back down. (Figure 1) shows the situation. Question: Suppose the foreman had released the box from rest at a height of 0.25 m above the ground. What would the crate's speed be when it reaches the bottom of the ramp?
    1 answer · Physics · 2 months ago
  • You push a 28kg sofa to the left a total distance of 3.0m and then push it back to the right a distance of 1.0m.?

    The coefficient of kinetic friction between the sofa and the hardwood floor is 0.20. 1. What is the work done by friction in moving the sofa? 2. Suppose that you had instead simply moved the sofa to its final position by moving it directly to the left. What is the work done by friction in this case? 3. From the results you obtained in Parts A and... show more
    The coefficient of kinetic friction between the sofa and the hardwood floor is 0.20. 1. What is the work done by friction in moving the sofa? 2. Suppose that you had instead simply moved the sofa to its final position by moving it directly to the left. What is the work done by friction in this case? 3. From the results you obtained in Parts A and B, what can you conclude about the nature of the friction force? Is it a conservative force? EXPLAIN
    1 answer · Physics · 2 months ago
  • A foreman released a box from rest at a height of 0.25 m above the ground. What is the crate's speed when it reaches the bottom of the ramp?

    In this example we will add friction to an inclined ramp. Of course, friction does work and we will need to determine its contribution to W(other). A crate full of machine parts sits on the floor; the total mass is 8.0 kg. The crate must be raised to the floor of a truck by sliding it up a ramp 2.5 m long, inclined at 30∘. The shop foreman, giving... show more
    In this example we will add friction to an inclined ramp. Of course, friction does work and we will need to determine its contribution to W(other). A crate full of machine parts sits on the floor; the total mass is 8.0 kg. The crate must be raised to the floor of a truck by sliding it up a ramp 2.5 m long, inclined at 30∘. The shop foreman, giving no thought to the force of friction, calculates that he can get the crate up the ramp by giving it an initial speed of 5.0 m/s at the bottom and letting it go. Unfortunately, friction is not negligible; the crate slides 1.6 m up the ramp, stops, and slides back down. (Figure 1) shows the situation.
    1 answer · Physics · 2 months ago
  • Find the skateboarder’s speed at the bottom of the pipe if he is pushed at the top edge, so he has an initial downward speed of 1.00 m/s.?

    Here we will tackle a circular-motion problem using conservation of energy. Because the acceleration in this problem is not constant, we cannot approach it with the tools we used when we studied circular motion. A boy skateboards down a quarter-pipe with radius R=3.0m (Figure 1) . The total mass of the boy and the skateboard is 25.0 kg. If he starts... show more
    Here we will tackle a circular-motion problem using conservation of energy. Because the acceleration in this problem is not constant, we cannot approach it with the tools we used when we studied circular motion. A boy skateboards down a quarter-pipe with radius R=3.0m (Figure 1) . The total mass of the boy and the skateboard is 25.0 kg. If he starts from rest and there is no friction, derive an algebraic expression for his speed at the bottom of the ramp. Evaluate this expression with the values given. (The skateboarder’s center of mass moves in a circle with radius somewhat smaller than R; ignore this small difference.)
    2 answers · Physics · 2 months ago
  • At what height does the gravitational potential energy of the ball equal its initial kinetic energy?

    A 0.5 kg ball is thrown up into the air with an initial speed of 2 m/s . A. When the ball goes up and comes back down to the same height that it was initially thrown from. B. When the ball reaches its maximum height, just before it starts to come back down. C. The gravitational potential energy of the ball never equals its initial kinetic... show more
    A 0.5 kg ball is thrown up into the air with an initial speed of 2 m/s . A. When the ball goes up and comes back down to the same height that it was initially thrown from. B. When the ball reaches its maximum height, just before it starts to come back down. C. The gravitational potential energy of the ball never equals its initial kinetic energy. OR D. When the ball is half way up to its maximum height.
    3 answers · Physics · 2 months ago