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Shalnov [3]
3 years ago
15

A treasure map instructs you to walk (25.0+A) m south, followed by (18.0+B) m east, then 64.5 m north, and finally 28.5 m east.

Determine the magnitude of your total displacement, if you follow these instructions. Calculate the answer in meters (m) and rounded to three significant figures.

Physics
1 answer:
adelina 88 [10]3 years ago
3 0

Answer:

Explanation:

Check attachment for solutions

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How does kinetic energy affect the stopping distance of a vehicle traveling at 30 mph compared to the same vehicle traveling at
Maru [420]
Well you of course have different kinetic energies with the two speeds.
Kinetic energy = (1/2)*mass*velocity^2
The vehicle's mass is the same in both cases, so we can ignore that as well as 1/2 since it's a constant.
So we have (30)^2 vs (60^2)
which is 900 vs 3600
So having 60 mph compared to 30 mph is 4 times the kinetic energy.
5 0
3 years ago
What is the frequency of a wave with speed 3m/s and wavelength 6m?
Ugo [173]

Answer:

f = 0.5 Hz

Explanation:

frequency = f

wave length = l

speed of wave = v

f = v/l → f = 3/6 = ½ = 0.5 Hz

6 0
2 years ago
Calculate the power if the current in a circuit is 3A and the resistance of the circuit is 50hms
Tresset [83]

Answer:

450W

Explanation:

V= I*R

V=3A*50 Ohms

V=150V

P=I*V

P=3A*150V

P=450W

3 0
3 years ago
A uniform rod of length L rests on a frictionless horizontalsurface. The rod pivots about a fixed, frictionless axis at oneend.
coldgirl [10]

Answer: a ) 6/19 V/L

b ) 3/19

Explanation:

5 0
3 years ago
True or False? In an RL circuit, the larger the value of R (i.e. the resistance of the circuit), the longer it takes the circuit
Luba_88 [7]

Answer:

1.False

2.4 E

Explanation:

1.We have to find the statement is true or false.

We know that

Time constant,\tau=\frac{L}{R}

Time constant is inversely proportional to resistance R .It means when R increases then time constant decreases when R decrease then the time  constant decreases.

Statement:The larger the value of R ,the longer it takes the circuit to reach its final steady- state value

It is false.

2.Energy stored in inductor,E=\frac{1}{2}LI^2

When I'=2I

Then, E'=\frac{1}{2}L(2I)^2=\frac{1}{2}LI^2\times 4=4 E

Hence,the new total energy will become 4 E.

3 0
3 years ago
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