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3 years ago

Esters are commonly used as artificial ___

Physics

2 answers:

Vera_Pavlovna [14]3 years ago

6 0

Answer:

Fragrance

Explanation:

Odor of Ester:

banana

citrus,orange

oil of wintergreen

raspberry

pear

pineapple

apple

Elza [17]3 years ago

4 0

Answer:

Fragrances

They are commonly used as fragrances and found in essential oils and pheromones.

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A ray of light strikes a smooth surface and is reflected. The angle of incidence is 35°. What can be predicted about the angle o

olga_2 [115]

Rays will follow the law of reflection, so the angle of reflection will be 35 degrees. If a light ray strikes a smooth surface, the reflected ray will bounce off the surface with the same angle the ray hits the surface. In other words, the angle of incidence is the same of angle of reflection, which is 35 degrees. If the surface is not smooth, the reflected ray might diffuse in all directions.

5 0

4 years ago

Read 2 more answers

The velocity of a 640-kg auto is changed from 10.0 m/s to 44.0 m/s in 71.0 s by an external, constant force. (a) What is the res

n200080 [17]

Answer:

(a) change in momentum of the car = 21760 kgm/s

(b) The magnitude of the force = 306.48 N

Explanation:

(a)

Change in momentum: This is the product of mass and change in velocity. The unit of momentum is kgm/s. It can be expressed mathematically as,

Change in momentum of the car = m(v-u)................. Equation 1

Where m = mass of the car, v = final velocity of the car, u = initial velocity of the car.

Given: m = 640 kg, v = 44.0 m/s, u = 10.0 m/s.

Substituting these values into equation 1,

Change in momentum of the car = 640 (44-10)

change in momentum of the car = 640× 34

change in momentum of the car = 21760 kgm/s

change in momentum of the car = 21760 kgm/s

(b) Force: Force of a body can be defined as the product of mass and its acceleration. It is measured in Newton (N). It can be expressed mathematically as,

Force = ma ................................ Equation 2

 Or

Force = m(v-u)/t...................................... Equation 3

Where m = mass of the car, v = final velocity of the car, u = initial velocity of the car, a = acceleration of the car, t = time taken to change the velocity.

Given: m = 640 kg, u = 10.0 m/s v = 44 m/s, t = 71 s.

Substituting these values into equation 3

Force = 640(44-10)/71

Force = (640×34)/71

Force = 306.48 N

The magnitude of the force = 306.48 N

3 0

3 years ago

Longitude lines are not ____________________________ like latitude lines.

vekshin1

They are not parallel like latitude lines. They meet at the poles, but latitude lines never meet

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3 years ago

2. What is the difference between special relativity and general relativity? Briefly describe each theory and cite one piece of

Natali [406]

The Special (as in Limited) Theory of Relativity, is a simplification of the General Theory of Relativity.

Essentially, if you eliminate acceleration, and any significant mass from the General Theory, you get the Special Theory.

Evidence for Special Relativity (solar moons for example), is also evidence for the General Theory. The General Theory is supported by:
- Universal expansion
- the spin down of binary pulsars
- frame dragging
- gravitational lensing
- gravitational time dilation

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3 years ago

A cannon is mounted on a tower above a wide, level field. The barrel of the cannon is 20 m above the ground below. A cannonball

OLga [1]

Answer:

Cannonball will be in flight before it hits the ground for 2.02 seconds

Explanation:

Initial height from ground = 20 meter.

We have equation of motion , $s= ut+\frac{1}{2} at^2$ , s is the displacement, u is the initial velocity, a is the acceleration and t is the time.