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serg [7]
3 years ago
5

Beverly and Carl are in a race. Their graphs show the data.

Physics
2 answers:
Lesechka [4]3 years ago
4 0

Answer:

Even though for a majority of the race they accelerated at the same rate, Beverly won because her initial acceleration was greater than Carl’s.

Explanation:

i took the test

posledela3 years ago
3 0

Answer:

the answer is:

Even though for a majority of the race they accelerated at the same rate, Beverly won because her initial acceleration was greater than Carl’s. Please choose brainliest i have never gotten it but its correct. the answer in edge is letter C ok hope this helps.

Explanation:

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A racecar is traveling at a speed of 80.0 m/s on a circular
Simora [160]
A :-) F = mv^2 by r
Given - m = 500 kg
v = 80.0 m/s
r = 450 m
Solution -
F = mv^2 by r
F = 500 x (80)^2 by 450
F = 500 x 6400 by 450
( cut 500 and 450 because 5 x 100 = 5 , 5 x 90 = 450 and also 90 and 6400 because 90 x 70 = 6400 )
F = 100 x 70
F = 7000

.:. The centripetal force is 7000 N
7 0
3 years ago
Read 2 more answers
In a collision, the __________ collision is when an unsecured driver strikes the inside of the vehicle.
zaharov [31]
In a collision, the second collision is when an unsecured driver strikes the inside of the vehicle. It is a collision that happens between an occupant of a vehicle and the vehicle he is riding during the impact. The first collision would be the collision of the vehicle and the other object.
6 0
3 years ago
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The filament of a certain lamp has a resistance that increases linearly with temperature. When a constant voltage is switched on
sashaice [31]

To solve this problem we can apply the concept related to thermal expansion, including the analogy with resistance and final intensity.

The mathematical expression that describes the expansion of a material by a thermal process is given by

R = R_0\alpha \Delta T

Where

R_0= Initial resistance

\alpha = Thermal expansion coefficient

\Delta T = Change in the temperature

If we want to directly obtain the final value of the resistance of the object, you would simply add the initial resistance to this equation - because at this moment we have the result of how much resistance changed, but not of its final resistance - So,

R_f = R_0 + L_0\alpha \Delta T

R_f = R_0(1 + \alpha \Delta T)

Re-arrange to find the change at the temperature,

\Delta T=\frac{1}{\alpha}\frac{R_f}{R_0}-1}

Since the resistance is inversely proportional to the current and considering that the voltage is constant then

R \propto \frac{1}{I}

Then,

\Delta T=\frac{1}{\alpha}\frac{I_0}{I_f}-1}

\Delta T = \frac{1}{4.5*10^{-3}}(\frac{I_0}{I_0/8}-1)

\Delta T = \frac{1}{4.5*10^{-3}}(8-1)

\Delta T = 1555.5k

<em>(It is possible that there is a typing error and the value is not 4.5 but 4.3, so the closest approximate result would be 1627K and mark this as the correct answer)</em>

6 0
3 years ago
PLEASE I NEED HELP!!
Bond [772]

Answer:

may be 5 m is the answer of this question

4 0
2 years ago
A 9 kg box is moving at a constant speed of 6 m/s to the right of a table. It experiences a leftward force of 13 N and an unknow
Llana [10]

Here as we can see the figure the object must have to move with constant speed

So here net force on the object must be zero

so we can say

F_{left} = F_{right}

so here we will have

F = 13 N

so there will be 13 N force towards right on this box

5 0
3 years ago
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