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Umnica [9.8K]
3 years ago
9

Which objects represents a negatively charged particle?

Physics
2 answers:
Darya [45]3 years ago
6 0

Answer:

B

A

C

C

Explanation:

This is the correct order on edge

denis-greek [22]3 years ago
3 0

Answer: B,A,C,C

Explanation:

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Substances have more kinetic energy in the ______ state than in the ______ state.
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Liquids state than in the solid state because when it is solid the particals cant move as much than in the liquid state 
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Light requires 4.5 years to travel from the nearest star to earth. If we could travel there in a spaceship going 90% of the spee
weeeeeb [17]

Answer:

Time according to earth clock (T0) = 0.22 years (Approx)

Explanation:

Given:

Time taken by light = 4.5 years

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Find:

Time according to earth clock (T0) = ?

Computation:

Time dilation is ,

T(Difference) = \frac{T0}{\sqrt{1-\frac{v^2}{c^2} } }\\\\ (5-4.5)= \frac{T0}{\sqrt{1-\frac{(0.9c)^2}{c^2} } }\\\\ 0.5=\frac{T0}{\sqrt{1-0.81} }\\\\T0 =0.2179

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7 0
3 years ago
A 50 g sample of an unknown metal is heated to 90.0C. It is placed in a perfectly insulated container along with 100 g of water
Scrat [10]

Answer:

0.64 J/g°C

Explanation:

Using the formula;

Q = m × c × ∆T

Where;

Q = amount of heat

m = mass (g)

c = specific heat capacity

∆T = change in temperature (°C)

In this case:

Q (water) = - Q (metal)

mc∆T (water) = - mc∆T (metal)

According to the information in this question,

For water; m = 100g, c = 4.18J/g°C, ∆T = (25°C - 20°C)

For metal; m = 50g, c =?, ∆T = (25°C - 90°C)

mc∆T (water) = - mc∆T (metal)

100 × 4.18 × (25°C - 20°C) = - {50 × c × (25°C - 90°C)}

100 × 4.18 × 5 = - {50 × c × -65}

2090 = -{-3250c}

2090 = 3250c

c = 2090/3250

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3 years ago
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According to this graph, which statement describes how the amount of iron changes over time in the reaction
VashaNatasha [74]
The graph shows the production of Fe, from the graph that it increases rapidly and then slowly increases.<span>The answer is a! (:
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5 0
4 years ago
HELP ASAP! PLEASEEEE <br><br>​
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Explanation:

Sorry i had to post it here. This is for the chemistry question on The top

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