Physics, 25.01.2021 15:30 cadez

SOMEONE PLEASE HELP ME WITH THIS SCIENCE/PHYSICS TEST QUESTION. THE CORRECT ANSWER SHALL BE MARKED AS BRAINLIEST AND I WILL ALSO FOLLOW YOU. (THE GRAPH IS IN THE PHOTO) THANKS XOXO

Emma wanted to investigate the resistance of a sample of a material.
Graph 1 shows how the resistance changes with length.
(THE GRAPH IN THE PHOTO)
Length in centimetres
(i) The current through a 20 cm length of conducting putty was 0.15 A.
Use Graph 1 to find the resistance of a 20 cm length of conducting putty.
Resistance = . ohms

SOMEONE PLEASE HELP ME WITH THIS SCIENCE/PHYSICS TEST QUESTION.

THE CORRECT ANSWER SHALL BE MARKE

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Answer from: Quest

The independent variable would be the fertilizer as it is what the dependent variable (the growth of grass) depends on.

Answer from: Quest

Distance covered = speed x timethe distance traveled going against the stream = distance traveled with the stream.therefore it is the speed and the time that are the variables.as he travels the same distance both ways, speed x time is the same for each way.going upstream his speed is 4 kph; going downstream his speed is 6 kph.therefore we have two simultaneous equations: time upstream x 4 = time downstream x 6time upstream + time downstream = 60 minutestherefore we have the equation: time upstream = 6/10 hour, time downstream therefore = 4/10 hour.distance traveled at 4km/hr in 6/10 hour = 24/10 = 2.4km.check: distance traveled at 6km/hr in 4/10 hour = 24/10 = 2.4km.

Answer from: Quest

chemical energy --> gravitational potential energy --> kinetic energy --> elastic potential energy --> gravitational potential energy

explanation:

when emma starts the hike, the chemical energy stored in her body is used to climb up the mountain, and so she gains gravitational potential energy (because at the end, she will be at a higher height h above the ground). then she goes bungee jumping: as she falls, this gravitational potential energy is converted into kinetic energy (because her speed increases as she falls down), until the point when the rope stretches, and she stops moving. at that moment, all the kinetic energy is converted into elastic potential energy due to the stretching of the rope. then, this energy is released because the rope returns to its natural length, and emma gains a small increase in altitude $\delta h$ , so she gains some gravitational potential energy.

Answer from: Quest

earth's neighboring galaxy, the andromeda galaxy, is a distance of 2.54×107 light-years from earth. if the lifetime of a human is taken to be 70.0 years, a spaceship would need to achieve some minimum speed min to deliver a living human being to this galaxy.

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SOMEONE PLEASE HELP ME WITH THIS SCIENCE/PHYSICS TEST QUESTION. THE CORRECT ANSWER SHALL BE MARKED...

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