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Norma-Jean [14]
3 years ago
11

I’m tryna pass this class so pleaseee

Physics
1 answer:
Y_Kistochka [10]3 years ago
6 0

Answer:

By looking at the graph it looks like its decreasing but you may want to re- read  the question to make sure that I am correct.I hope that this helps!

Explanation:

You might be interested in
When chasing a hare along a flat stretch of ground, a greyhound leaps into the air at a speed of 10.1 m/s, at an angle of 16.9°
vesna_86 [32]

Answer:

a) The range of the leap is 5.80 m.

b) The time that the greyhound is in the air is 0.600 s

Explanation:

The position of the greyhound is given by the position vector "r":

r =(x0 + v0 · t · cos α, y0 + v0 · t · sin α + 1/2 · g · t²)

Where:

r = position vector at time "t".

x0 = initial horizontal position.

v0 = initial horizontal velocity.

y0 = initial vertical position

t = time.

α = leap angle.

g = acceleration due to gravity (-9.8 m/s² considering the upward direction as positive).

a) At the end of the leap, the position vector will be "r final" (see figure). The vector r final could be written as:

r final = (x, 0 m)

Where "x" is the range.

Then, using the equation for the vertical position we can obtain the time of flight of the leap. With that time, we can calculate the range using the equation for the horizontal position.

Then:

y = y0 + v0 · t · sin α + 1/2 · g · t²

0 m = 0 m + 10.1 m/s · t · sin 16.9° - 1/2 · 9.8 m/s² · t²

0 m = t (10.1 m/s · sin 16.9° - 4.9  m/s² · t)

0 m = 10.1 m/s · sin 16.9° - 4.9  m/s² · t

- 10.1 m/s · sin 16.9° / - 4.9  m/s²  = t

t = 0.600 s

The x-component of the vector "r final" will be:

x = x0 + v0 · t · cos α

x = 0 m + 10.1 m/s · 0.600 s · cos 16.9°

x = 5.80 m

The range of the leap is 5.80 m.

b) The time that the greyhound is in the air is 0.600 s. It was calculated above using the equation for the y-component of the vector "r final".

4 0
3 years ago
1. What types of elements does an ionic bond occur between?
sweet [91]

Answer:

Ionic bonds form when a nonmetal and a metal exchange electrons, while covalent bonds form when electrons are shared between two nonmetals. An ionic bond is a type of chemical bond formed through an electrostatic attraction between two oppositely charged ions.

Explanation:

6 0
3 years ago
A particle with a mass of 2.3 × 10-20 kg is oscillating with simple harmonic motion with a period of 3.0 × 10-5 s and a maximum
baherus [9]

Answer:

angular frequency is 209439.51 rad/sec

maximum displacement  is 0.010504 m

Explanation:

Given data

mass = 2.3 × 10^-20 kg

period = 3.0 × 10^-5 s

maximum speed = 2.2 × 10^3 m/s

to find out

the angular frequency and  maximum displacement

solution

we know angular frequency formula that is

angular frequency = 2 π / period

put here period value we get angular frequency

angular frequency = 2 π / 3.0 × 10^-5

angular frequency is 209439.51 rad/sec

maximum displacement formula is

speed = angular frequency × maximum displacement

put all value and we get maximum displacement

maximum displacement  = 2.2 × 10^3 / 209439.51  

maximum displacement  is 0.010504 m

8 0
3 years ago
A surgeon makes an incision that divides the patient's abdomen into superior
Nata [24]

Answer:

B. Oblique

Explanation:

Hope this helps

3 0
3 years ago
Please solve it asap ty!
vodomira [7]

Answer:

thanks for the five points

8 0
3 years ago
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