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Question: On a safari, you are spear fishing while wading in a river. You observe a fish gliding by you. If your line of sight to the fish is 68.0° below the horizontal in air, and assuming the spear follows a straight line path through the air and water after it is released,
Part A: Determine the angle below the horizontal that you should aim your spear gun in order to catch dinner.
I need help to solve the above question and assume the spear gun barrel is 1.60 m above the water surface, the fish is 1.00 m below the surface, and the spear travels in a straight line all the way to the fish.
A large man sits on a four-legged chair with his feet off the floor. The combined mass of the man and chair is 95.0 kg. what pressure does each leg exert on the floor
A small light planet has a mass 1/100 that of Earth and radius 1/4 that of Earth. An astronaut weighs 600N on Earth. How much would the astronaut weigh on the surface of the smaller planet?
A horizontal force of 2.8 N is applied to a 1.2- kg radio, initially at rest on a table with a level surface. What is the coefficient of friction if it just begins to move
Two 68 g ice cubes are dropped into 234 g of water in a thermally insulated container. If the water is initially at25°C, and the ice comes directly from a freezer at -15°C, what is the final temperature at thermal equilibrium?
A 0.24 kg blob of clay is thrown at a wall with an initial velocity of 19 m/s. If the clay comes to a stop in 91 ms, what is the average force experienced by the clay
A meter rule is balanced at the 70 cm mark by placing a 200 g mass at the 80 cm mark. What is the mass of the ruler
An electric scooter has a battery capable of supplying 140 Wh of energy. If friction forces and other losses account for 60 percent of the energy usage, what altitude change can a rider achieve while driving in hilly terrain, if the rider and scooter..
A light ray passes during a spherical raindrop, undergoing refraction as it enters the drop, than total internal reflection, and refraction as it leaves the drop. Show that the angle of the incident ray and exiting ray is 4 sin-1 (sin θ/n)-2θ
A distant galaxy emits light that has a wavelength of 557.1 nm. On earth, the wavelength of this light is measured to be 560.8 nm, Find the speed of the galaxy relative to the earth
The light shining on a diffraction grating has a wavelength of 530 nm (in vacuum). How many lines per centimeter does the grating have
How much energy was released in an explosion
When a pendulum with a period of 2.00000 second is moved to a new location from one where the acceleration of gravity was 9.80 m/s2, Find by how much does the acceleration of gravity differ at its new location
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