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Marizza181 [45]

3 years ago

13

Research has shown that 25% of homeless adults are veterans. What are the probability of selecting a particular homeless person

who is not a veteran

1 answer:

bonufazy [111]3 years ago

5 0

Answer:

75%

Explanation:

if 25% of homeless veterans then the rest of the 75% are probably not veterans.

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An ice skater has a moment of inertia of 5. 0 kg∙m2 when her arms are outstretched. At this time she is spinning at 3. 0 revolut

Sindrei [870]

Answer:

2440.24 J

Explanation:

Moment of inertia, I1 = 5 kg m^2

frequency, f1 = 3 rps

ω1 = 2 x π x f1 = 2 x π x 3 = 6 π rad/s

Moment of inertia, I2 = 2 kg m^2

Let the new frequency is f2.

ω2 = 2 x π x f2

here no external torque is applied, so the angular momentum remains constant.

I1 x ω1 = I2 x ω2

5 x 6 π = 2 x 2 x π x f2

f2 = 7.5 rps

ω2 = 2 x π x 7.5 = 15 π

Initial kinetic energy, K1 = 1/2 x I1 x ω1^2 = 0.5 x 5 x (6 π)² = 887.36 J

Final kinetic energy, K2 = 1/2 x I2 x ω2^2 = 0.5 x 3 x (15 π)² = 3327.6 J

Work done, W = Change in kinetic energy = 3327.6 - 887.36 = 2440.24 J

5 0

2 years ago

The anatomy for palimpest<br>

Dimas [21]

Answer:

Writer Jonah Lehrer has been following the work of several scientists engaged in experiments with the brain and our eureka moments. The studies aim to pinpoint ...

Explanation:

right ???

3 0

2 years ago

What mass of glucose (C6H12O6) should be dissolved in 12. 0 kg of water to obtain a solution with a freezing point of -5. 8 ∘C?.

bogdanovich [222]

The mass of glucose solute dissolved in the solution is 6.739 Kg.

Recall that;

ΔT = K m i

ΔT = Freezing point depression

K =Freezing point depression constant = 1.86°C/mol

m = molality of the solution

i = Van't Hoff factor = 1 (molecular solution)

We have to find the freezing point depression from;

Freezing point depression = Freezing point of pure solvent - Freezing point of solution

Freezing point of pure water = 0°C

Freezing point of solution = -5. 8 ∘C

Freezing point depression = 0°C - (-5. 8 ∘C) = 5. 8 ∘C

Now;

m = ΔT/K i

m = 5. 8 ∘C/ 1.86°C/mol × 1

m = 3.12 m

But molality = number of moles of solute/mass of solvent in Kg

Molar mass of solute = 180 g/mol

Let the mass of solute be m

3.12 = m/180/12

3.12 = m/180 × 12

m = 3.12 × 180 × 12

m = 6739 g or 6.739 Kg

Learn more: brainly.com/question/6249935

8 0

2 years ago

Read 2 more answers

+23PTS! PDF Volume question -_- find diameter from the cylinder. I got 9 answer is 6 how???

Serga [27]

Answer: See below

Explanation:

For this question, we are given the volume, and we want to find the diameter. We have to work backwards to get our radius, then to find the diameter.

$V=\pi r^2h$ (Volume of cylinder)

$72\pi =\pi r^2h$ (The π cancel out)

$72 =r^2(8)$ (Plug in h=8)

$9=r^2$ (Divide 8)

$r=3$ (Square root of 9 is 3)

Now that we have our radius, we can find our diameter.

$d=2r$ (Equation for diameter)

$d=2(3)\\$ (Plug in r=3)

$d=6yards$ (Multiply)

5 0

3 years ago

Read 2 more answers

Your class has 27 students.

vivado [14]

Answer:

18

Explanation:

27 divided by 3 is 9. 9 times 2 equals 18.

3 0

3 years ago

Read 2 more answers