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katovenus [111]
3 years ago
10

A car moves around a circular track at a constant rate. What must change?

Chemistry
2 answers:
lbvjy [14]3 years ago
8 0

A car moves around a circular track at a constant rate it's velocity changes.

Option-B.

<u>Explanation:</u>

As the car is moving in the circular motion, its velocity changes, as its speed is scalar and which means it is constant, velocity changes (being a vector quantity).

Its angular velocity is the speed in the direction of the curve the vehicle moves, which means it is constant, but is acted upon by an acceleration toward its center called centripetal acceleration and it is necessary to maintain the circular motion of the car.

Sergeeva-Olga [200]3 years ago
7 0

Answer:C) both its speed and its velocity.

Explanation:

changing one but not the other would cause a spin out and crash

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Consider the nuclear equation below. Superscript 124 subscript 56 B a right arrow superscript 124 subscript 55 upper C s plus qu
nadezda [96]

Superscript o subscript negative 1 e.

Explanation:

The nuclear reactions is of 2 types, one is nuclear fusion and the other one is nuclear fission.

Nuclear fusion is nothing but the combining of 2 nuclei with an emission of energy along with an electron, proton or beta particle.

Nuclear fission is the break down of a nucleus into 2 or more nuclei along with an electron, proton or beta particle.

And the reaction is,

₅₆B¹²⁴  ₅₅C¹²⁴ +  ₋₁e⁰

So the blank was filled by means of a beta particle.

6 0
3 years ago
Read 2 more answers
A solution is made by dissolving 10.7 g of magnesium sulfate, MgSO4, in enough water to make exactly 100 mL of solution. Calcula
adell [148]

Answer:

[MgSO₄] = 890 mM/L

Explanation:

In order to determine molarity we need to determine the moles of solute that are in 1L of solution.

Solute: MgSO₄ (10.7 g)

Solvent: water

Solution: 100 mL as volume. (100 mL . 1L / 1000mL) = 0.1L

We convert the solute's mass  to moles → 10.7 g / 120.36 g/mol = 0.089 moles

Molarity (mol/L) → 0.089 mol/0.1L = 0.89 M

In order to calculate M to mM/L, we make this conversion:

0.89 mol . 1000 mmoles/ 1 mol = 890 mmoles

4 0
3 years ago
A 1 mol sample of gas has a temperature of 225K, a volume of 3.3L, and a pressure of 500 torr. What would the temperature be if
serg [7]
<h3>Answer:</h3>

78.75 K

<h3>Explanation:</h3>

<u>We are given;</u>

  • Initial pressure, P₁ = 500 torr
  • Initial temperature,T₁ = 225 K
  • Initial volume, V₁ = 3.3 L
  • Final volume, V₂ = 2.75 L
  • Final pressure, P₂ = 210 torr                        

We are required to calculate the new temperature, T₂

  • To find the new temperature, T₂ we are going to use the combined gas law;
  • According to the combined gas law;

P₁V₁/T₁ = P₂V₂/T₂

We can calculate the new temperature, T₂;

Rearranging the formula;

T₂ =(P₂V₂T₁) ÷ (P₁V₁)

  = (210 torr × 2.75 L × 225 K) ÷ (500 torr × 3.3 L)

  = 78.75 K

Therefore, the new volume of the sample is 78.75 K

5 0
3 years ago
Name all nonmetals that’s are halogens PLEASE HELP ASAP
Nikitich [7]

Answer:

chlorine, fluorine, bromine, iodine, Xenon, and radon

7 0
3 years ago
A compound is found to contain 50.05% sulfur and 49.95% oxygen by mass. What is the empirical formula for this compound
yaroslaw [1]
S=50.05/32  O=49.95/16, S=1.5640625/1.5640625  O=3.121875/1.5640625, S=1 O=1.99, S=1 O=2 Empirical Formula= SO2
8 0
3 years ago
Read 2 more answers
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