Physics

A) Find the tension in each of the two ropes supporting a hammock if one is at an angle of 1 = 10 above the horizontal and the other is at an angle of 2 = 33 above the horizontal. The person sleeping in the hammock (unconcerned about tensions and ropes) has a mass of 66 kg . Express your answer using two significant figures.T1= ? NB) Express your answer using two significant figures.T2= ? N
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you see a burglar run by you. the police come by a few seconds later and ask you for help. the most useful quantity you could give them is the burglar'smultiple choice question.velocity.acceleration.time.speed.
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A man hikes 6. 6 km north along a straight path with an average velocity of 4. 2 km/h to the north. He rests at a bench for 15 min. Then, he hikes 3. 8 km north with an average velocity of 5. 1 km/h to the north. How long does the total hike last?.
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Why is the wavelike nature of a moving baseball typically not observed?.
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What voltage is required to give the plates of a 270-pF capacitor a charge of 7. 3109C?Express your answer to two significant figures and include the appropriate units. NEED HELP
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26.0 g of mercury is heated from 28c to 175c, and absorbs 545 joules of heat in the process. calculate the specific heat capacity of mercury.
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A water droplet falling in the atmosphere is spherical. assume that as the droplet passes through a cloud, it acquires mass at a rate proportional to ka where k is a constant (k>0) and a is its cross-sectional area. consider a droplet of initial radius r0 that enters a cloud with a velocity v0. assume no resistive force and show: a. that the radius increases linearly with the timeb. that if r0 is negligibly small then the speed increases linearly with the time within the cloud.
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Measuring the length from the lowest point of a spring-mass to the highest point, it is found to be 42 cm. What is the amplitude?a. 42cmb. 0. 42mc. 84cm d. 21cm
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Gravitational force between two bodies is 5N When they are placed at the distance of 1om.. How much gravitational force will be produced if they are kept at the distance of 20m.
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the image below shows a photo taken with a built-in lens of a digital camera. the bottom photo is taken with the same camera, but with an additional wide-angle lens. which wave phenomenon best explains the distortion of the bottom image compared to the top? diffraction dispersion reflection polarization
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An iron Cub has each 15cm long at 20c. What will be :1 the new surface of a face weather temperature rise to 80c2 the volume of the same final temperature
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What is the spring constant of this spring?
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Robert and his younger brother Jake decide to go fishing in a nearby lake. Just before they cast off, they are both sitting at the back of the boat and the bow of the boat is touching the pier. Robert notices that they have left the fishing bait on the pier and asks Jake to go get the bait. Jake has a mass of 59. 5 kg and an arm reach of 50. 0 cm, Robert has a mass of 87. 5 kg, and the boat has a mass of 83. 0 kg and is 2. 70 m long. Determine the distance the boat moves away from the pier as Jake walks to the front of th
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Explain how a balloon sticks to a wall.What charge is the balloon?What happens to the wall as you put the balloon near it? Why does this happen?Include in your explanation the law of charges.Be as detailed in your explanation as possible.
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on page 1 you had to draw the direction the earth moved without gravity in position 1 and 2. what was different about the path the earth took when there was not any gravity? * 5 points the earth moved in a straight line and did not move around the sun the orbit of the earth was faster the earth moved around the sun but travelled in a straight line the orbit of the earth stayed the same when you increased the mass of the sun, what happened to the gravity force? * 5 points it increased it stayed the same it decreased when you increased the distances, what happened to the gravity force? * 5 points it decreased it increased it stayed the same when you decreased the distances, what happened to the gravity force? * 5 points it increased it decreased it stayed the same when you increased the gravity, what happened to orbital speed? * 5 points it stayed the same it decreased it increased what are the 2 factors that affect the force of gravity? * 5 points the speed and size (mass) of an object the shape of the orbit and the distance between the objects nothing can change gravity because it is a natural force the size (mass) and distance between the objects
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If the wavelength of an x-ray is 5.2 x 10^-11 m, what is its frequency?
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a light sensor is based on a photodiode that requires a minimum photon energy of 1.65 ev to create mobile electrons. part a what is the longest wavelength of electromagnetic radiation that the sensor can detect?
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If your core temperature becomes colder, it is more difficult for oxygen to dissociate from hemoglobin at any po2.
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A puck slides on a frictionless table hitting a block. in which scenario does the puck exert the most force on the block?
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which of the following travel at the same speed as light? check all that apply. which of the following travel at the same speed as light?check all that apply. x-rays. radar. microwaves. cell phone signals. radio waves. gamma rays. infrared radiation. ultrasonic waves.
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The microwave transmitters that we use have a frequency of about 10 ghz. What is the approximate wavelength?.
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If you double the kinetic energy of a nonrelativistic particle, how does its de Broglie wavelength change? The wavelength Choose your answer here by a factor of Type your answer here [factor answer should be given to one decimal place (ex. 1. 5)]
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A tuning fork has a 545 hz pitch. when a second fork is struck, beat notes occurwith a frequency of 6 hz. what are the two possible frequencies of the second fork?
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Your camera's zoom lens has an adjustable focal length ranging from 80.0 to 205 mm. what is its range of powers (in d)
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