Sharon pours salt into a glass of water. The salt dissolves. The substance in the glass is a_________
study island

Answer:

It helps prevents falls and supports your body. So having a strong core is beneficial to everyone because it allows your body to function properly. Improved Balance and Stability. Core exercises train the muscles in your pelvis, lower back, hips and abdomen to work together.

Answer:

mass= 3.5 kg

distance covered= 0.4m

inital speed = 1.5 m/sec

final speed = 0 m/sec

net force

formula for force :

[tex] \fbox{f = m.a}[/tex]

In order to find the force we need to find the acceleration.

According to third equation of Kinematics-

[tex] \bold{ {v}^{2} = {u}^{2} + 2as}[/tex]

where,

v= final velocity

u=inital Velocity

a=Acceleration

s=Distance covered

put the value in the above equation

0= (1.5)²+ 2a x 0.4

-2.25= 0.8a

a = -2.25/0.8

a= - 2.8125 m/sec²

now put the value 0f accleration in formula of force

F = 3.5 x - 2.8125

F= -9.84375 N

Answer:

load (l)=400N

Effort(E)=50N

mechanical advantage (MA)= load ÷Effort

(ma)=400÷50

(ma)=8

Explanation:

I copy pasted from the answer from the same question. Remember to first check if ur question is there

Answer:

She is likely to crash because her flight gradient is lesser than the flight gradient required gradient to avoid crashing

Explanation:

The given parameters are;

The required gradient of the plane Ashley is flying needs to reach in order to take off and not crash = 360 m/km

The initial elevation of the plane Ashley is flying = Sea level = 0 m

The goal Ashley intends to make = Elevation of 1000 m at 2.8 km. distance

∴ Ashley's goal = Traveling from sea level to 1000 m at 2.8 km horizontal distance

We have;

The gradient  = Rate of change of elevation/(Horizontal distance)

Therefore;

The gradient of Ashley's flight = (1000 - 0)/(2.8 - 0) = 357.143 m/km

The gradient of Ashley's flight ≈ 357.143 m/km which is lesser than the required 360 m/km in order to take off and not crash, therefore, she will crash.

Answer:

40m

Explanation:

40m

Answer:

57,6N

Explanation:

To find the component  of a force on the x-axis we can simply do:

F * cos(36) = 72N * 0.8 = 57,6N

C because the air will push him closer to the space station

Answer:

D. Shoot gas from his compressed air canister away from the space station

Explanation:

Isacc Newton's 3rd law states "For every action, there is an equal and opposite reaction." The statement means that in every interaction, there is a pair of forces acting on the two interacting objects. The size of the forces on the first object equals the size of the force on the second object.

Answer:

True

Explanation:

A loud noise cancels out

A loud noise gives off less energy than a quiet noise : False

Loudness is the intensity of sound heard in a given period. it is dependent on the amplitude of the sound waves.

The loudness of a sound is proportional to the square of the amplitude of the sound wave, meaning that the larger the amplitude of wave, the more the intensity and the more the sound.

Since waves carry energy along, it means a wave with a large amplitude transfers more energy and therefore loud sound.

In conclusion, the louder the sound the more energy it gives off and the quieter the sound the less energy it gives off.

learn more about properties of sound waves : https://brainly.com/question/9898147

#SPJ2

Answer:

One atom will give electrons to another atom to fill its shell, this is an ionic bond. The atom giving away electrons becomes positive and the one recieving electrons becomes negative.

Explanation:

Answer: One atom will give electrons to another atom to fill its shell, this is an ionic bond. The atom giving away electrons becomes positive, and the one receiving electron becomes negative.

Explanation:

I did the Gizmo.

Answer:

I once yelled out in zoom "I WANNA KISS A ANIME BOY" Cause of a silly dare

Explanation:

Everyone laughed and I was kicked

Answer:

my brother was pushing the cart at target and the front like got my ankles and I fell in front of everyone and he was just laughing.

Answer:

false

Explanation:

this is what google said

No because the path the electricity needs to follow is broken. In a parallel circuit, electricity has more than one path to follow. Electrons can follow different paths as they flow from the negative side of the battery to the positive side.

Answer:

Explanation:

A mechanical wave is a disturbance in matter that transfers energy through the matter. The matter through which a mechanical wave travels is called the medium (plural, media). ... They differ in how particles of the medium move when the energy of the wave passes through.

Answer: B

Explanation:

Answer:

i. Cyclist A travelled 15 km 1 h cyclist A had started his journey from point X

  Cyclist B travelled 18 km 1 h cyclist A had started his journey from point X

ii. cyclist B overtake cyclist A 6 km from the same starting point X.

Explanation:

From the question,

- Cyclist A and B cycled at an average speed of 15 km/h and 20 km/h respectively.

- Cyclist B started his journey 6 mins after cyclist A had started.

Let the cyclist A time be t.

Then, we can write that

For Cyclist A

Speed = 15 km/h

Time = t mins

For Cyclist B

Speed = 20 km/h

Time = (t - 6) mins

i) To determine the distances travelled by cyclist A and B 1h cyclist A had started his journey,

For Cyclist A

Speed = 15km/h

Time = 1h = 60 mins

From the formula

Speed = Distance / Time

Then,

Distance = Speed × Time

Putting the values into the equation,

Distance = 15km/h × 1h

Distance = 15 km

∴ Cyclist A travelled 15 km 1 h cyclist A had started his journey from point X

For cyclist B

Speed = 20km/h

Time = 1h - 6mins = 60mins - 6mins = 54mins = 54/60 hour = 0.9 h

Also, from

Distance = Speed × Time

Putting the values into the equation

Distance = 20km/h × 0.9h

Distance = 18 km

∴ Cyclist B travelled 18 km 1 h cyclist A had started his journey from point X

ii) To determine the distance cyclist B overtake cyclist A, that is, when the distance covered by cyclist A equals that covered by cyclist B.

First, we will determine the time at which the distances covered by both cyclists were equal.

From

For Cyclist A

Speed = 15 km/h

Time = t hour  

Distance = Speed × Time

Distance = 15t km

For Cyclist B

Speed = 20 km/h

Time = (60t - 6) mins = (t - 0.1) hour

Distance = 20 × (t - 0.1) = (20t - 2) km

Equate the distances

15t = 20t - 2

15t - 20t = -2

-5t = -2

5t = 2

t = 2/5

t = 0.4 hour

Hence, cyclist B overtake cyclist A 0.4 hour after cyclist A had started.

For the distance cyclist B overtake cyclist A,

From

Distance = (20t - 2) km

Distance = (20×0.4 - 2) km

Distance = (8 - 2) km

Distance = 6 km

Hence, cyclist B overtake cyclist A 6km from the same starting point X.

Answer:

1. The stone will strike the ground 49.46 m from the base of the cliff

2. A) Approximately 0.542 seconds

B)  Approximately 3.69 m/s

3. A) The time the ball spends in the air is approximately 4.0775 s

B) The horizontal range is approximately  141.25 m.

Explanation:

1. The time it takes the stone to land is given by the equation, t = √(h/(1/2 × g)

∴ t = √(30/(1/2 × 9.81)) ≈ 2.473 seconds

The horizontal distance covered by the stone in that time = 20 × 2.473 ≈ 49.46 m

The stone will strike the ground 49.46 m from the base of the cliff

2. A) The time the ball spends in the air = t = √(h/(1/2 × g)

∴ t = √(1.44/(1/2 × 9.81)) ≈ 0.542 seconds

B) The initial horizontal velocity, u = Horizontal distance/(Time) = 2/0.542 ≈ 3.69 m/s

The initial horizontal velocity ≈ 3.69 m/s

3. A) The time the ball spends in the air is given by the following equation;

t = 2 × u × sin(θ)/g = 2 × 40 × sin(30)/9.81 ≈ 4.0775 s

t ≈ 4.0775 s

B) The horizontal range, R, of the  ball is given by the equation for the range of a projectile as follows;

[tex]Range, R = \dfrac{u^2 \times sin (2 \cdot \theta) }{g}[/tex]

Substituting the known values, gives;

[tex]Range, R = \dfrac{40^2 \times sin (2 \times 30^{\circ}) }{9.81} \approx 141.25 \ m[/tex]

The horizontal range ≈ 141.25 m.

Answer:

The neutral wire is often confused with ground wire, but in reality, they serve two distinct purposes. Neutral wires carry currents back to power source to better control and regulate voltage. Its overall purpose is to serve as a path to return energy.

Answer:

y = 1

Explanation:

We need to see the equation given

y = 10/x

So we need to replace the value of x = 10 into the equation.

y = 10/10

y = 1

true

Explanation:

Because I did the test

Answer:

The right answer is True

Answer & Explanation:

Crashing into the asteroid would cause the satellite to slow down, stop, or reverse direction, because it is a force in the opposite direction to the satellite's motion. Whichever crash was a stronger force would cause it to change motion more. It takes a stronger force to change the velocity of a more massive object.

Answer:-400 n

Explanation:

Answer:

I think it's 10 minutes per km

Answer:

1.4 meters per second (5.0 km/h, 3.1 mph, 4.6ft/s

Answer:

The final vertical velocity is greater than the initial vertical velocity

Explanation:

Horizontal Motion

When an object is thrown horizontally with a speed vox from a height h, it describes a curved path ruled by gravity.

The resultant motion is the composition of the vertical motion and the horizontal motion.

The speed in the horizontal direction is always constant:

vx=vox

The speed in the vertical direction starts from zero and gradually increases in time:

vy=g.t

When the object was just launched, t=0, and its vertical velocity is 0

After some time has passed, the object is about to hit the ground, and its vertical velocity is greater than zero, thus:

The final vertical velocity is greater than the initial vertical velocity

[tex]w = F * S[/tex]

[tex]F = 20\\S = 10\\F * S = 20 * 10 = 200[/tex] Joules <- 1st answer

[tex]w = F * S[/tex]

[tex]1234 = F * 100[/tex]

[tex]F = \frac{1234}{100}[/tex]

[tex]F = 12.34 N[/tex]  <- 2nd answer

Answer:

Its the third law of motion.

Explanation:

Newton's third law of motion states that every action has equal and opposite reaction.

Explanation:

distance

speed =_________

time

distance = speed × time

= 2.5 × 5.0

distance = 12.5 m

Answer: yes it is

Explanation: A biotic factor is something that is living. this also apply to plants animals and people. A dinosaur was once a living being so it would be classified as a biotic factors. An abiotic factor is something that is not living .so that would be tables chairs and clothes.

Answer:

C more than 1 second

Explanation:

it will take time since its 4.9 meters and how hard you throw it down