Illustrate what minimum height must it spot the pelican

Assignment Help Physics
Reference no: EM13116903

Pelicans tuck their wings and free-fall straight down when diving for fish. Suppose a pelican starts its dive from a height of 20.0 m and cannot change its path once committed.

If it takes a fish 0.20s to perform evasive action, at what minimum height must it spot the pelican to escape? Assume the fish is at the surface of the water.

Express your answer using two significant figures.

Reference no: EM13116903

Questions Cloud

Explain at what average rate does the force from the cable : The loaded cab of an elevator has a mass of 2.8 x 103 kg and moves 223 m up the shaft in 26 s at constant speed. Explain at what average rate does the force from the cable do work on the cab?
Calculate what fraction of the threonine side chains : The amino acid threonine has a hydroxyl side chain for which the pKa is 8.18. Calculate what fraction of the threonine side chains will carry a negative charge at pH 7.
Economic rationale japan airlines behind hedges : What was the economic rationale behind JAL's hedges? Did JAL's forward contracts constitute an economic hedge? That is, is it likely that JAL's losses on its forward contracts were offset by currency gains on its operations?
Illustrate what is the intensity of the beam transmitted : Illustrate what is the intensity of the beam transmitted through the three sheets when 1 = 19.0°, 2 = 51.0° and 3 = 100.0° ?
Illustrate what minimum height must it spot the pelican : If it takes a fish 0.20s to perform evasive action, at illustrate what minimum height must it spot the pelican to escape? Assume the fish is at the surface of the water.
Impact of rupiah depreciation on bakrie : Assess the likely impact of the rupiah's depreciation on Bakrie's three different businesses. Which of Bakrie's businesses will be most hurt by the rupiah's fall? Will any of these businesses actually benefit from rupiah depreciation?
What does it mean to vary the sentence pattern : What does it mean to vary the sentence pattern within a written work? What does voice refer to in a sentence? What does tense refer to?"
What to prove to exceed goal : If 485 out of the next 500 orders are processed on the same day, would this prove that they are exceeding their goal, using α = .025?
Illustrate what is the angle ?2 which the left-hand cable : What is the tension T2 in the left-hand cable slanted at an angle of θ2 with respect to the wall? Illustrate what is the angle θ2 which the left-hand cable makes with respect to the ceiling?

Reviews

Write a Review

Physics Questions & Answers

  Find the largest possible displacement of shopper

A shopper pushes a cart 44- m south down one aisle and then turns 90.0° west and moves 30 m. He then makes another 90° turn and moves 13 m.

  What is the grocery carts final speed

An airtight box has a removable lid of area 1.10 multiplied by 10-2m2 and negligible weight. The box is taken up a mountain where the air pressure outside the box is 0.80 multiplied by 105 Pa.

  Which floor of building would the stream of water strike

A dock worker applies a stable horizontal force of 79.0 {rm N} to a block of ice on a smooth horizontal floor. The frictional force is negligible. The block starts from rest and moves 14.0 {rm m} in the first 6.00 {rm s}.What is the mass of the bl..

  In which direction and how far should the crew fly

you are on a plane that leaves DIA and flies 170 km at 68 east of north and then changes direction to fly 230 km at 48 south of east, after which it makes an emergency landing in a pasture next to a large herd of buffalo.

  Calculate the magnitude of the resultant electric field

A charge 1.1 × 10?5 C is fixed on the x-axis at 7 m, and a charge 8 × 10?6 C is fixed on the y-axis at 5 m. Calculate the magnitude of the resultant electric field ~E at the origin. Answer in units of N/C

  Suppose the collision is elastic

A massless string runs around two massless, frictionless pulleys. An object with mass m = 12.20 kg hangs from one pulley. A force F is exerted on the free end of the string. What is the magnitude of the force F if the object is lifted at the constant..

  Predict how fast the ball will be traveling 2 seconds later

You throw a ball straight up in the air. The instant after leaving your hand, the balls speed is 30 meters per second. Ignoring the effects of air resistance, predict how fast the ball will be traveling 2 seconds later.

  Evaluate the electrostatic energy of two opposite charges

Evaluate the electrostatic energy of two opposite charges

  Assume the bullets deceleration to be constant

Two people stand 3 m in front of large plane mirror and space 5m a part in dark room at what angle of incidence should one of them shine a flashlight on the mirror so that reflected beam directly strickes the other person.

  Find out the length of pendulum

How high a tree would a 79.0 kg person have to climb to increase his gravitational potential energy relative to the ground by that amount.

  What fraction of the balls volume

An airplane is flying with a velocity of 90 at an angle of 22 above the horizontal. When the plane is a distance 122 directly above a dog that is standing on level ground, a suitcase drops out of the luggage compartment.

  Evaluate what is the mass of the second car

The two stick together and move off with a speed of 4.0 m/s. Evaluate what is the mass of the second car?

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd