3 years ago

PLEASE HELP!!! GIVING BRAINLIEST!! ill also answer questions that you have posted if you answer this correctly!!!! (50pts)

Physics

1 answer:

inn [45]3 years ago

6 0

Explanation:

object D would be the hardest to stop, it has more mass, thus it has a higher momentum than the others, requiring a larger force to stop

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What type of reaction is shown in the following chemical equation: 2H2O → 2H2 + O2?

Kay [80]

Answer:

Decomposition

Explanation:

A reaction in which one compound breaks up into two or more compounds is called a decomposition reaction.

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3 years ago

Read 2 more answers

A rod of length 35.50 cm has linear density (mass per length) given by λ = 50.0 + 23.0x where x is the distance from one end, an

hram777 [196]

Answer:

(a)20.65g

(b)0.19m

Explanation:

(a) The total mass would be it's mass per length multiplied by the total lenght

0.355(50 + 23*0.355) = 20.65 g

(b) The center of mass would be at point c where the mass on the left and on the right of c is the same

Hence the mass on the left side would be half of its total mass which is 20.65/2 = 10.32 g

$c(50 + 23c) = 10.32$

$23c^2 + 50c - 10.32 = 0$

$c \approx 0.19m$

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3 years ago

A conductor of radius r, length and resistivity ρ has resistance r. what is the new resistance if it is stretched to 4 times its

max2010maxim [7]

The resistance of a conductor is given by
$R= \frac{\rho L}{A}$
where L is the length of the wire, $\rho$ the resistivity of the material and A the cross-sectional area.

We can see that if all the other quantities do not change, if the new length of the conductor is 4 times the original length: $L'=4 L$ , then the new resistance is also 4 times the original value:
$R'= \frac{\rho L'}{A}= \frac{\rho 4 L}{A}=4 \frac{\rho L}{A}=4 R$

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3 years ago

A roller coaster is at the top of a hill and rolls to the top of a lower hill if mechanical energy is constant then on the top o

mafiozo [28]

The kinetic energy is greater on the second hill

hope i helped have a great day

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3 years ago

39. I also use it when I do the homework. (par 1 line 3).

Yuri [45]

Answer:

Explanation: