Physics

help please :)))))))))))
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PLEASE HELP NO LINKS NEED HELP FASTUse the scenario to answer the question.An astronomer discovers a new galaxy using a telescope. The astronomer wants to investigate how the galaxy is moving relative to the Milky Way galaxy.In one or two sentences, make a hypothesis about the movement of the galaxy and explain at least one way to test the hypothesis.
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Please help me someone !
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what is the amplitude and wavelength of the wave shown below?
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If the model spacecraft were made ONLY out of plastic (no other materials) would it be repelled by the magnet launcher?yes or no?
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All waves change speed when they enter a new medium, but they don't always bend. When does bending occur?
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An electromagnetic wave has a frequency of 5.0 x 1014 Hz. What is thewavelength of the wave? Use the equation 2 = and 3.0 x 108 m/s for thespeed of light.A. 1.7 x 10-8 mB. 6.0 x 1022 mO C. 6.0 x 10-7 mO D. 1.7 x 105 m
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GIVING BRAINLIEST PLEASE HELP!!-if you answer correctly ill give you brainliest which will give you 23pts-
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A cylindrical diving bell is open at the bottom and closed at the top, and is 5m tall. The bell is open to atmospheric air until it is placed in the water, but the bell remains upright (open end facing down, closed end facing up). The pressure of the air inside the bell will naturally increase by 105 Pa for every 10m of depth the bell descends within the water. Assume the temperature of the air remains constant for this process, and that the air can be approximated as an ideal gasRequired:a. If the bell is lowered 40 meters below the surface, how many meters of air space are left inside the bell?b. Explain why water doesn't completely flood the bell as it enters the water V (m).
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Why would you have trouble breathing at high altitudes?A. it is colder at the top of a mountainB. the oxygen molecules are spread farther apartC. the oxygen molecules are closer together
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What is the color of lava at its hottest? Help asap
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How is our magnetic field made?
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A car goes from 0 m/s to 13 m/s in 10 seconds. What is thecar's rate of acceleration?
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On a perfect fall day, you are hovering at low altitude in a hot-air balloon, accelerated neither upward nor downward. The total weight of the balloon, including its load and the hot air in it, is 20,000 N. a. Show that the weight of the displaced air is 20,000 N. b. Show that the volume of the displaced air is 1700 m3 .
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Can someone please help me with science.
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A 41.6-kg person, running horizontally with a velocity of +4.21 m/s, jumps onto a 14.6-kg sled that is initially at rest. (a) Ignoring the effects of friction during the collision, find the velocity of the sled and person as they move away. (b) The sled and person coast 30.0 m on level snow before coming to rest. What is the coefficient of kinetic friction between the sled and the snow?
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Since astronauts in orbit are apparently weightless, a clever method of measuring their masses is needed to monitor their mass gains or losses to adjust diets. One way to do this is to exert a known force on an astronaut and measure the acceleration produced. Suppose a net external force of 60.0 N is exerted and the astronaut's acceleration is measured to be 0.870 m/s2. (a) Calculate her mass (in kg). kg (b) By exerting a force on the astronaut, the vehicle in which they orbit experiences an equal and opposite force. Discuss how this would affect the measurement of the astronaut's acceleration. Propose a method in which recoil of the vehicle is avoided.
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a disk of radius 10 cm speeds up from rest. it turns 60 radians reaching an angular velocity of 15 rad/s. what was the angular acceleration?b. how long did it take the disk to reach this velocity?
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Why did the lemon battery work and how many volts does one produce?O The juice of the lemon is an acid and the acid caused 2 volts.O The juice of the lemon is an electrolytic solution allowing electrons to flow and created around 5 V.O The juice of the lemon is an electrolytic solution allowing electrons to flow and created around 1.5 V.O The juice of the lemon is an acid and the acid caused 1 volt.
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Three 5 Ohm resistors are connected in series to a 10 Volt power supply. What is the current through each resistor?
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does altitude has an effect on weight, yes or no
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When acceleration and velocity are in opposing directions, the speed will
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How large a force F is needed in the figure to pull out the 6.0 kg block with an acceleration of 1.50m/s^2 if the coefficient of friction at its surfaces is 0.40?
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how would a small bar magnet be oriented when placed at position x ? option c is wrong.
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