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neonofarm [45]
3 years ago
11

amy bought 3 body lotions and 7 body spray for 80 jessica bought 6 body lotion and 3 body spray for 63.75 how much does one body

spray cost
Physics
1 answer:
Marta_Voda [28]3 years ago
4 0

Answer:

Each body spray cost $ 21.25

Explanation:

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A dentist’s drill starts from rest. After 3.20 s of constant angu-lar acceleration, it turns at a rate of 2.51 3 104 re v/m i n.
Gekata [30.6K]

Answer:

ΔTita = 4205.6 rad

Explanation:

w_{i} means initial angular velocity, which is 0 rev/min

w_{f} means final angular velocity, which is 2.513*10^{4}rev/min

t means time t= 3.20 s

one revolution is equivalent to 2πrad so the final angular velocity is:

w_{f} = (2π/60) *2.513*10^{4} rad/s

w_{f}= 2628.5 rad/s

so the angular acceleration, α will be:

α = 2628.5 rad/s / 3.20 s

a = 821.40 rad/s^{2}

so the rotational motion about a fixed axis is:

w^{2} _{f} =w^{2} _{i} + 2αΔTita    where ΔTita is the angle in radians

so now find the ΔTita the subject of the formula

ΔTita = \frac{w^{2} _{f}-w^{2} _{i}  }{2a}

ΔTita = ((2628.5)^{2} - (0 rev/min)^{2}) / 2* 821.40

ΔTita = 4205.6 rad

7 0
4 years ago
Read 2 more answers
The carbon monoxide molecule (CO) consists of a carbon atom and an oxygen atom separated by a distance of
valkas [14]

Answer:

6.46*10^-11m

Explanation:

We can use the equation of the center of the mass of two atoms

Xcm=\frac{mcxc+moxo}{mc+mo}

If we take the origin at the center of the molecule carbon monoxice, xc will be 0, so

Xcm=\frac{moxo}{mc+mo}=\frac{xo}{mc/mo+1}

Xcm=\frac{1.13.10^-3}{0.750mo/mo+1}=6.46*10^-11m

7 0
3 years ago
One mole of nickel (6 1023 atoms) has a mass of 59 grams, and its density is 8.9 grams per cubic centimeter, so the center-to-ce
ss7ja [257]

Answer: 44 N/m

Explanation:

Finding the interatomic spring stiffness

Because in our model all the bonds are assumed to be the same, the interatomic spring stiffness ks, interatomic is determined by adding the springs . The details of that addition are below, but the final result is that the interatomic spring stiffness is related to the spring stiffness of the wire like so:

Find the attached file for solution

7 0
3 years ago
Please help me with 7 and 8
deff fn [24]

Answer:

7) order of vector addition B. does not affect the result

8) 13 Newton N = 12 Newton N + A. 1 Newton N

Explanation:

4 0
3 years ago
Bob and Lily are riding on a merry-go-round. Bob rides on a horse near the outer edge of the circular platform, and Lily rides o
dimaraw [331]

Answer: the same as Lily's

Explanation:

Angular velocity has to do with the speed at which an object will be able to rotate. We are informed that Bob and Lily are riding on a merry-go-round.

Since we are further told that Bob rides on a horse near the outer edge of the circular platform, and Lily rides on a horse near the center of the circular platform and that he merry-go-round is rotating at a constant angular speed.

Based on the above analysis, Bob's angular speed will be thesame as that of Lily.

5 0
3 years ago
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