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3 years ago

How can you differentiate between elements and compounds

Physics

1 answer:

scZoUnD [109]3 years ago

6 0

Answer: An element is one singular molecule.

ie: Potassium

A compound is multiple elements fused together.

ie: Water or H2O

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Cells & Cellular Processes

never [62]

Answer:

one or more cells

Explanation:

I need to have 20 characters to submit lol

7 0

2 years ago

Calculate the monentun pf 75 kg bicycle and boy who has ghe velocitg of 3m/s

Grace [21]

Explanation:

n=75 kg

v=3m/s

m=n×v

m=75x3

m= 225n

6 0

2 years ago

Daring Darless wishes to cross the Grand Canyon of the Snake River by being shot from a cannon. She wishes to be launched at 65

guajiro [1.7K]

Answer:

She must be launched with minimum speed of <u>57.67 m/s</u> to clear the 520 m gap.

Step-by-step explanation:

Given:

The angle of projection of the projectile is, $\theta =65$ °

Range of the projectile is, $R=520$ m.

Acceleration due to gravity, $g=9.8\ m/s^2$

The minimum speed to cross the gap is the initial speed of the projectile and can be determined using the formula for range of projectile.

The range of projectile is given as:

$R=\frac{v_{0}^2\sin2\theta}{g}$

Plug in all the given values and solve for minimum speed, $v_0$ .

$520=\frac{v_{0}^2\sin(2(65))}{9.8}\\520\times 9.8=v_{0}^2\sin(130)\\5096=1.532v_{0}^2\\v_0^2=\frac{5096}{1.532}\\v_0^2=3326.371\\v_0=\sqrt{3326.371}=57.67\textrm{ m/s}$

Therefore, she must be launched with minimum speed of 57.67 m/s to clear the 520 m gap.

3 0

3 years ago

What is the volume of a 6-sided die a cube with each side measuring 1.6 cm across

Savatey [412]

4.096. You just have to multiply 1.6 three times. V=s^3

8 0

3 years ago

A 35.0-kg dolphin decelerates from 12.0 to 7.50 m/s in 2.30 s to join another dolphin in play. What average force was exerted to

Stels [109]

Answer:

68.5N

Explanation:

When the dolphin decelerates from 12m/s to 7.5 m/s within 2.3s. Then its acceleration is:

$a = \frac{\Delta v}{\Delta t} = \frac{7.5 - 12}{2.3} = -1.96 m/s^2$

The dolphin has a mass of 35kg, according to the Newton's 2nd law, the force exerted on it must be:

$F = ma = 35*1.96 = 68.5 N$

6 0

3 years ago

How can you differentiate between elements and compounds​

How can you differentiate between elements and compounds