Bru this was a challenge..........

Answer:

Explanation:

A Pythagorean triple consists of three positive integers a, b, and c, such that a2 + b2 = c2. ... The name is derived from the Pythagorean theorem, stating that every right triangle has side lengths satisfying the formula a2 + b2 = c2; thus, Pythagorean triples describe the three integer side lengths of a right triangle.

Answer:

1 is gas

2. a false

b. true

c. true

d. false

3. fig(3)

B and A

Yes, just a B and an A.

Answer:

1. B

2. A

Explanation:

edge2020

Answer:

Magnetism is an example of a non-contact or action-at-a-distance force. These are forces which can act on an object without being in physical contact with it. The force of gravity is another example. Thus, gravity will pull a raindrop down to Earth without any tangible physical link between the Earth and the drop.

Explanation:

hope this helps u, sorry if it doesn't.

Answer:

Magnetic force

Explanation:

It would be this because all of th other forces are touching the object to make it move or somhting like that, the only one that makes it move by not touching it would be the magnetic force,

Hope this helps

Answer:

the answer is in the ultraviolet range

Answer:

in the yellow-green range

Explanation:

Right on Edge

Answer:

cardiovascular endurance is alot like mostly running

Answer:

Explanation:

A turbine and generator produce the electricity

"A hydraulic turbine converts the energy of flowing water into mechanical energy. A hydroelectric generator converts this mechanical energy into electricity.

Answer:

0 (zero) Joules

Explanation:

If the displacement is 0 (zero) meters, then the work is zero, since it is defined as the product of the force exerted times the displacement that occurred in the same direction of the force.

If the displacement is zero, the product becomes zero as well.

Answer:

8 kg*m/s and 2m/s

Explanation:

momentum is mass times velocity. since the velocity changes by 2 m/s. you just take the difference from final velocity to beginning velocity.

4kg*12m/s = 48 kg*m/s

4kg*10m/s = 40 kg*m/s

48kg*m/s - 40 kg*m/s = 8kg*m/s

Answer:

You didn't put any options but there are water droplets on the window due to dew-condensation.

Explanation:

I learned this in class.

Answer:

its C or D

Explanation:

The energy from the sun caused water to heat up and evaporate.

Answer: e. P/2

Explanation:

For ideal gases, we have the relation:

P*V = n*R*T

where:

n =  number of mols

R = Gas constant

T = temperature

V = volume

P = pressure.

We know that for sample A, we have n moles, a temperature T and a volume V, then the pressure of this sample will be:

Pa = (n*R*T)/V.

For sample B, we have:

n/2 moles, temperature T/2 and a volume V/2, then the pressure will be:

Pb = (n/2)*R*(T/2)*(2/V) = (n*R*T/V)*(2/4)

and:

(n*R*T/V) = Pa

Then we can replace it and we get:

Pb = (n*R*T/V)*(2/4) = Pa*(2/4) = Pa*(1/2) = Pa/2.

Then the correct option is e.

Answer:

He was 0.4781 s in air.

Explanation:

This question is on an object launched horizontally with zero angle and at a height H.

The formula to apply is ;

[tex]T=\sqrt{\frac{2H}{g} }[/tex]

where ;

T=time of flight = ?

H= height of the object was launched = 1.12 m

T= √2*1.12/9.8

T=√0.22857

T= 0.4781 seconds

Answer:

A, the objects velocity

Explanation:

Answer: If you meant 5 miles in 20 minutes than it’s 1 mile in 5 minutes

Explanation:

The car's average speed is

0.1875 • (the number of miles it covered)

Answer:

6.9m/s

Explanation:

Given parameters:

Acceleration of the object  = 4m/s²

Distance = from x; 2m to x; 8m

Unknown:

Average velocity  = ?

Solution:

From the given parameters, we use the right motion equation to solve the problem.

   v² = u² + 2aS

v is the final velocity

u is the initial velocity

a is the acceleration

 S is the distance covered

 Distance  = 8m - 2m  = 6m

 Initial velocity  = 0m/s

The final velocity gives us the average velocity in this problem;

       v² = 0² + (2 x 4 x 6) = 48

      v = √48  = 6.9m/s

Answer:

Where is the quantity?

Explanation:

Plz show the question properly

Answer:

frequency=velocity/wavelength

ie velocity=frequency×wavelength=33×4=134m/s

Explanation:

In an inelastic collision, the momentum remains conserved while the kinetic energy is not conserved.

(i) Here, a small sports car runs into the machine from behind.

Due to the conservation of momentum, it remains conserved. It means their momentum changes are the same size.

Hence, the correct option is (c).

(ii) The car is moving faster than the tractor. A faster moving object will lose more energy as compared to the other. It means car's most of the energy is converted to internal energy. The car will have a a larger change in kinetic energy. Hence, the correct option is (a).

Answer:

a) The x and y components of the momentum are [tex]8.731\,\frac{kg\cdot m}{s}[/tex] and [tex]-11.661\,\frac{kg\cdot m}{s}[/tex], respectively.

b) The magnitude and direction of its momentum are approximately 14.567 kilogram-meters per second and 306.823º.

Explanation:

a) The vectorial equation of momentum is represented by the following expression:

[tex]\vec p = m\cdot \vec v[/tex] (1)

Where:

[tex]\vec p[/tex] - Vector momentum, measured in kilogram-meters per second.

[tex]m[/tex] - Mass of the particle, measured in kilograms.

[tex]\vec v[/tex] - Vector velocity, measured in meters per second.

If we know that [tex]m = 2.93\,kg[/tex] and [tex]\vec v = 2.98\,\hat{i}-3.98\,\hat{j}\,\,\,\left[\frac{m}{s} \right][/tex], then the momentum is:

[tex]\vec p = (2.93)\cdot (2.98\,\hat{i}-3.98\,\hat{j})\,\,\,\left[\frac{kg\cdot m}{s} \right][/tex]

[tex]\vec p = 8.731\,\hat{i}-11.661\,\hat{j}\,\,\,\left[\frac{kg\cdot m}{s} \right][/tex]

The x and y components of the momentum are [tex]8.731\,\frac{kg\cdot m}{s}[/tex] and [tex]-11.661\,\frac{kg\cdot m}{s}[/tex], respectively.

b) The magnitude and direction of momentum are represented by the following expressions:

[tex]\|\vec p \| = \sqrt{p_{x}^{2}+p_{y}^{2}}[/tex] (2)

[tex]\theta = \tan^{-1}\left(\frac{p_{y}}{p_{x}} \right)[/tex] (3)

Where:

[tex]\|\vec p\|[/tex] - Magnitude of momentum, measured in kilogram-meters per second.

[tex]\theta[/tex] - Direction of momentum, measured in sexagesimal degrees.

If we know that [tex]p_{x} = 8.731\,\frac{kg\cdot m}{s}[/tex] and [tex]p_{y} = -11.661\,\frac{kg\cdot m}{s}[/tex], then the magnitude and direction of momentum are, respectively:

[tex]\|\vec p\| = \sqrt{\left(8.731\,\frac{kg\cdot m}{s} \right)^{2}+\left(-11.661\,\frac{kg\cdot m}{s} \right)^{2}}[/tex]

[tex]\|\vec p\| \approx 14.567\,\frac{kg\cdot m}{s}[/tex]

[tex]\theta =\tan^{-1}\left(\frac{-11.661\,\frac{kg\cdot m}{s} }{8.731\,\frac{kg\cdot m}{s} } \right)[/tex]

[tex]\theta \approx 306.823^{\circ}[/tex]

The magnitude and direction of its momentum are approximately 14.567 kilogram-meters per second and 306.823º.

Force = Mass × Acceleration

Mass = 2.5 kg

Acceleration = 4 m/s^2

Force = 2.5 × 4

Force = 10 N

The force of the object is 10 N

Answer:

it is attracted to negative pole

A copper wire will get attracted to negative pole of magnetic field when it

is moved across it

The copper wire has free electrons in it which when moved across the

magnetic field will result in the movement of the electrons to the negative

pole of the magnetic field.

This is because unlike poles attract and like poles repel. Copper is a metal

and positively charged and so it gets attracted to the negative pole during

electron flow.

Read more on https://brainly.com/question/22403676

Answer:

V/Ve = 1.1

Explanation:

The formula to find the escape velocity of an object at a distance from Earth's Surface is given as follows:

Ve = √[2GM/R]

where,

Ve = escape velocity = ?

G = Universal Gravitational  Constant = 6.67 x 10⁻¹¹ N.m²/kg²

M = Mass of Earth = 5.97 x 10²⁴ kg

R = Radius of Earth = 6.37 x 10⁶ m

Therefore,

Ve = √[2(6.67 x 10⁻¹¹ N.m²/kg²)(5.97 x 10²⁴ kg)/(6.37 x 10⁶ m)]

Ve = 11.2 x 10³ m/s = 11.2 km/s

Hence, the ratio will be:

V/Ve = (12.3 km/s)/(11.2 km/s)

V/Ve = 1.1

Answer:

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