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balu736 [363]
3 years ago
15

A child operating a radio-controlled model car on a dock accidentally steers it off the edge. The car's displacement 0.91 s afte

r leaving the dock has a magnitude of 7.0 m. What is the car's speed at the instant it drives off the edge of the dock?
Physics
1 answer:
NemiM [27]3 years ago
6 0

Answer:

Explanation:

distance, d = 7 m

time, t = 0.91 s

speed, v = distance / time

v = 7 / 0.91

v = 7.69 m/s

Thus, the speed is 7.69 m/s

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The amplitude of a wave is dependent upon what? A. the amount of energy carried by the wave B. the maximum displacement from the
storchak [24]
Given that amplitude and energy are related, the amplitude of a wave is dependent upon A. the amount of energy carried by the wave.
These two are connected, so one affects the other and vice versa.
7 0
3 years ago
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You want to see how your new belt buckle matches your new hat. Your eyes are 114 mm below the top of the hat and 800 mm above th
damaskus [11]

Answer:

x=0.057m

h=0.457m

Explanation:

From the question we are told that

Distance of eyes from the top of hat d_1=114mm

Distance of eyes from buckle  d_2=800mm

Generally position of mirror relative eyes x is mathematically given as

x=\frac{114}{2}

x=57mm

x=0.057m

Generally the height of the mirror h is mathematically given as

h=\frac{(Buckle\ below\ the\ hat)+(Buckle\ below\ the\ hat)}{2}

h=\frac{(114)+(800)}{2}

h=457mm

h=0.457m

7 0
3 years ago
What is the resistance in a circuit that carries a 0.75 A current when powered by a 1.5 V battery?
olga2289 [7]
The formula to use is: I = (<span> ΔV / R )
Once you solve for R, your new formula would be: R= (</span><span> ΔV / I ) 
Plug in your values to get: R = (1.5V / .75A )
Finally, R = 2</span><span>Ω</span>
8 0
3 years ago
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A boat is able to move through still water at 20 m/s. It makes a round trip to a town 10 km upstream. If the river flows at 5m/s
Nataly_w [17]

Answer:

The time required for this round trip is 1066.66 s

Explanation:

Given;

velocity of boat through still water, v₁ = 20 m/s

distance moved by the boat, d = 10 km = 10,000 m

velocity of the river, v₂ = 5 m/s

time = d / v

The boat made two journeys which formed the round trip.

During the first part of the journey, the boat moves upstream in opposite direction to the flow of the river and the resultant velocity is calculated as;

Resultant velocity = 20 - 5 = 15 m/s

Time for this journey, = 10000/ 15 = 666.66 s

During the second part of the journey, the boat moves downstream in the same direction to the flow of the river and the resultant velocity is calculated as;

Resultant velocity = 20 + 5 = 25 m/s

Time for this journey, = 10000/ 25 = 400 s

Total time for the trip = 666.66 s + 400 s = 1066.66 s

7 0
3 years ago
34.9x46x809 Please helpp
Fed [463]
<h2>34.9×46×809</h2><h3>=1605.4×809 </h3><h3>=1298768.6</h3>

please mark this answer as brainlist

6 0
3 years ago
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