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3 years ago

13

Complete the following sentence.

1 answer:

notka56 [123]3 years ago

5 0

Could it be "Scientific research"?

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Bipolar disorder demographic?

irinina [24]

Answer:

affects about 5.7 million adult Americans at age 18 or older every year

Explanation:

8 0

3 years ago

What force is required to give an object with mass 125 kg an acceleration of 3

stiks02 [169]

The answer is B

Using the equation, F=MA, we can determine that...
(125kg) (3m/s^2) = 375N

7 0

4 years ago

A proton travels with a speed of 1.8×106 m/s at an angle 53◦ with a magnetic field of 0.49 T pointed in the +y direction. The ma

Likurg_2 [28]

Answer:

Magnetic force, $F=1.12\times 10^{-13}\ N$

Explanation:

It is given that,

Velocity of proton, $v=1.8\times 10^6\ m/s$

Angle between velocity and the magnetic field, θ = 53°

Magnetic field, B = 0.49 T

The mass of proton, $m=1.672\times 10^{-27}\ kg$

The charge on proton, $q=1.6\times 10^{-19}\ C$

The magnitude of magnetic force is given by :

$F=qvB\ sin\theta$

$F=1.6\times 10^{-19}\ C\times 1.8\times 10^6\ m/s\times 0.49\ Tsin(53)$

$F=1.12\times 10^{-13}\ N$

So, the magnitude of the magnetic force on the proton is $1.12\times 10^{-13}\ N$ . Hence, this is the required solution.

3 0

3 years ago

You have two springs that are identical except that spring 1 is stiffer than spring 2, (k1 > k2). On which spring is more wor

kicyunya [14]

Answer:

Explanation:

Given

Two springs with spring constant $k_1$ and $k_2$

(a)If they are stretched using the same force

Force $F=k_1x_1=k_2x_2$

where $x_1$ and $x_2$ are the extension in the spring

so $\frac{k_1}{k_2}=\frac{x_2}{x_1}$

therefore $x_2 > x_1$

Work done is given by

$W=F\cdot x$

$W_1=F\cdot x_1$

$W_2=F\cdot x_2$

thus $W_2 > W_1$

(b)If they are stretched the same distance

$\frac{F_1}{F_2}=\frac{k_1}{k_2}$

Thus $F_1 > F_2$

For same extension, work done by Force 1 is more

$W_1 > W_2$

6 0

4 years ago

If the mass of a material is 115 grams and the volume of the material is 16 cm3, what would the density of the material be?

hjlf

Well, density is mass/volume. So what's 115 g / 16 cm3? That'll get you your density. Remember that density will be in g/cm3!

6 0

3 years ago