A lifeguard is working at a pool sitting in his guard stand

Assignment Help Physics
Reference no: EM13665180

A lifeguard is working at a pool sitting in his guard stand. He notices a child right below him drowning that appears to be 1.5 m below the surface of the water? How deep is the child actually? Suppose he is sees the child at a very small angle, and utilize the small angle approx. of sinθ= tanθ = θ

Reference no: EM13665180

Questions Cloud

Location of the final image gauged from the second lens : A converging lens by a focal length of 20 cm is set 25 cm in front of a diverging lens with a focal length of 15 cm.  An object with a height of 2 cm is set 10 cm in front of the first lens.  What is the location of the final image gauged from the se..
A solid-square pinewood raft measures : A solid, square pinewood raft measures 4.4 m on a side and is 3.00 m thick. What is the total mass of swimmers that the raft can carry and float by its top surface at water level?
Only a small part of an iceberg protrudes above the water : Only a small part of an iceberg protrudes above the water, while the bulk lies below the surface. The density of ice is907 kg/m3 and that of seawater is 1029 kg/m3.Discover the percentage of the iceberg's volume that lies below the surface.
Compute the phase angle among current and applied voltage : A circuit connected to a 110V, 60-Hz source contains a 50Ω resistor and a coil with an inductance of 100 mH. Discover a) the power dissipated with the coil and b) compute the phase angle among the current and the applied voltage.
A lifeguard is working at a pool sitting in his guard stand : A lifeguard is working at a pool sitting in his guard stand. He notices a child right below him drowning that appears to be 1.5 m below the surface of the water? How deep is the child actually? Suppose he is sees the child at a very small angle, and ..
Exiting rays that travel parallel to the lower side : A prism whose cross section is shaped like an isosceles right triangle is made from a material with index of refraction, n =1.33. Discover the angle θ of the entering/exiting rays that travel parallel to the lower side (in degrees).
Translational kinetic energy of a gas molecule in container : An ideal gas in a container is at a temperature of 79.4°C. What is the average translational kinetic energy of a gas molecule in the container?
Observers on earth measure for speed of laser beam : You are traveling in a spaceship at a speed of 0.52c away from Earth. You send a laser beam toward Earth traveling at velocity relative to you. What do observers on the Earth measure for the speed of the laser beam?
A transverse periodic wave is established on a string : A transverse periodic wave is established on a string. The wave is described with the expression: y = 0.05 sin(20.0x - 2nft) Where y is in meters when x and t are in meters and seconds, respectively. If the wave travels by a speed of 20.0m/s, what is..

Reviews

Write a Review

Physics Questions & Answers

  Estimate the gravitational force between them

John weighs 716 N, and Marcia weighs 506 N. Estimate the gravitational force between them when they are 0.45 m apart

  Water and aluminum reach thermal equilibrium

Calculate the entropy change for the following system: One kilogram of 80 C aluminum is placed into 2L of 20 C water in a container with negligible heat capacity and adiabatic walls. The water and aluminum reach thermal equilibrium. Assume specific h..

  What is the height hm in meters write an expression for the

a basketball player throws a basketball m 1 kg straight up with an initial velocity of v0 6.5 ms. the ball leaves his

  A moth at about eye level is 12 cm in front of a plane

a moth at about eye level is 12 cm in front of a plane mirror you are behind the moth 34 cm from the mirror. what is

  What is the cars speed at the top

The normal force equals the magnitude of the gravitational force as a roller coaster car crosses the top of a 59-m-diameter, What is the car's speed at the top

  Find the appropriate banking angle of car

If a roadway is banked at the proper angle, a car can round a corner without any assistance from friction between the tires and the road

  Determine what is the angular acceleration of the wheel

A wheel rotating with a constantangular acceleration turns through 22 revolutions during a 3 s timeinterval. What is the angular acceleration of the wheel

  What is the straight-line distance

A projectile is launched with an initial speed of 40.0 m/s at an angle of 30.0° above the horizontal. What is the straight-line distance from where the projectile was launched to where it hits its target

  A dilute ideal gas of atoms each of mass

A dilute ideal gas of atoms each of mass M at temperature τ is placed in a cetrifuge rotating with angular velocity ω. Derive an expression for the relative density of gas molecules as a function of their radial distance r from the axis of rotation.

  Estimate how many maxima does it detect

Two radio-frequency point sources separated by 1.5 m are radiating in phase with ? = 0.30 m. How many maxima does it detect

  A building made with a steel structur

A building made with a steel structure is 596 m high on a winterday when the temperature is 0?F. How much taller is the building when the temperature is T = 104?F? (The linearexpansion coefficient of steel is α = 1.1 ×10−5 (?C)−1.)

  A rotating sprinkler is placed in the vertex of apie-shaped

a rotating sprinkler is placed in the vertex of apie-shaped plot of ground. if the sprinkler shoots the water out

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