whats the answers to this??

Answer:

it would be a

Explanation:

If something is living it usually has to eat something to thrive, for example a tree photosynthesis to get the nutrition it needs while a rock just sits there and isn't living.

Answer:

To be considered living it have to use energy, it has to be made of cells. Something living is also referring to things that were once living

Explanation:

Answer:

The Sun shines by turning hydrogen into helium in its core.

Explanation:

This process is called nuclear fusion. Fusion happens when lighter elements are forced together to become heavier elements. When this happens, a tremendous amount of energy is created.

Answer:

1.) D. There is an equal and opposite force impacting the hand

2.) B. In all situations

3.) A. Velocity decreases to conserve momentum

4.) A. p=mv

5.) C. 100 kg*m/s

6.) C. The train cars move together in the direction the large car was moving

7.) D. m1v1+m2v2=0

8.) D. By drawing the vectors one right after the other

9.) B. Increase the mass and decrease the acceleration by the same numeric values

10.) D. The change in velocity over time

11.) B. The ball has no net force acting on it

12.) A. m1v1i+m2v2i=m1v1f+m2v2f

Explanation:

Did the practice

(1) The fighters wear padded gloves to protect their hands because there is an equal and opposite force impacting the hand.

(2) The two balls when collide in a closed system will exert equal and opposite force.

(3) When the mass of the object increases, the velocity of the object will decrease to conserve momentum.

(4) The equation for calculating the momentum of an object is P = mv

(5) The momentum of the ball is 100 kg.m/s

(6) The train cars move together in the direction the large car was moving.

(7) The conservation of momentum of two objects is [tex]m_1v_1 - m_2v_2= 0[/tex]

(8) The sum of two vectors can be found by  drawing the vectors perpendicular to each other.

(9) A closed system can be changed without changing the net force on the system by increase the mass and decrease the acceleration by the same numeric values.

(10) Acceleration is defined as the change in velocity over time.

(11) As ball rolls down at constant velocity, the ball has no net force acting on it.

(12) The conservation of momentum of the object is [tex]m_1v_1_i + m_2v_2_i = m_1v_1_f + m_2v_2_f[/tex]

(1)

According to Newton's third law of motion, action and reaction are equal and opposite.

The fighters wear padded gloves to protect their hands because there is an equal and opposite force impacting the hand.

(2)

Based on the principles of conservation of linear momentum, the two balls when collide in a closed system will exert equal and opposite force.

(3)

The principles of conservation of linear momentum is written as;

[tex]m_1u_1 + m_2u_2 = m_1v_1 + m_2v_2[/tex]

when the mass of the object increases, the velocity of the object will decrease to conserve momentum.

(4)

The equation for calculating the momentum of an object is written as;

P = mv

(5)

The momentum of the ball is calculated as follows;

P = mv

P = 50 x 2

P = 100 kg.m/s

(6)

For inelastic collision, the collided two objects move in the same direction after collision usually in the direction of heavier object.

The train cars move together in the direction the large car was moving.

(7)

The conservation of momentum of two objects is written as;

[tex]m_1v_1 = m_2v_2\\\\m_1v_1 - m_2v_2 = 0[/tex]

(8)

The sum of two vectors can be found by  drawing the vectors perpendicular to each other.

(9)

A closed system can be changed without changing the net force on the system by increase the mass and decrease the acceleration by the same numeric values.

(10)

Acceleration is defined as the change in velocity over time.

(11)

At constant velocity , acceleration = 0

∑F = ma

∑F = m x 0

∑F = 0

Thus, as ball rolls down at constant velocity, the ball has no net force acting on it.

(12)

The conservation of momentum of the object is written as;

[tex]m_1v_1_i + m_2v_2_i = m_1v_1_f + m_2v_2_f[/tex]

Learn more here:https://brainly.com/question/7538238

Answer:

B)Lead is a solid at 310 °C

Explanation:

The melting point of a substance refers to that temperature in which the substance changes state from solid to liquid. The melting point of a substance, which is usually a temperature value, is that actual temperature the change of state occurs.

According to this question, the melting point of Lead (Pb), which is naturally a solid metal, is 327.5°C. This means that LEAD (Pb) will only change to its liquid state at exactly 327.5°C and above. Therefore, at a temperature of 310°C, which is lower than lead's melting point, Lead element will still be a solid.

Answer: The correct answer is B. Lead is a solid at 310

Explanation:

Answer:

180

Explanation:

i think

Answer:

the answer is 19 ,30 (second) times 0.5= 15

15+4= 19

After Paco drives his scoter west with an initial velocity of 4 m/s and then accelerates at 0.5 m/s² for 30 s, his final velocity is 19 m/s, so the correct option is the fourth.  

The final velocity of Paco can be calculated with the following equation:

[tex] v_{f} = v_{i} + at [/tex]

Where:

[tex] v_{f}[/tex]: is the final velocity =?

[tex]v_{i}[/tex]: is the initial velocity = 4 m/s

a: is the acceleration = 0.5 m/s²

t: is the time 30 s

Hence, the final velocity is:

[tex] v_{f} = 4 m/s + 0.5 m/s^{2}*30 s = 19 m/s [/tex]

Therefore, the correct option is 19 m/s.    

You can find more about acceleration and velocity here: https://brainly.com/question/9163788?referrer=searchResults  

I hope it helps you!          

Answer: true

Explanation:   when two objects collide and completely bounce apart with no lasting deformation or generation of heat, the collision is said to be elastic.

have a good day!! please mark me brainliest

Answer:Density = 7.5 g/ml (By putting the given values.) [ The ratio of the mass to volume is the density, that's why the unit of the density is also the ratio of the unit of mass to the unit of volume. ] Hence, the density of the object is 7

Explanation: Google

[tex] ({v})^{2} - ({v(0)})^{2} = 2 \times a \times ∆x[/tex]

[tex]v = the \: \: speed \: \: before \: \: reaching \: \: ground \\ [/tex]

[tex]v(0) = the \: \: speed \: \: in \: \: the \: \: rest \: \: which \: \: is \: \: zero \\ [/tex]

[tex]a = Acceleration \: = \: Gravity \: \: acceleration = 10 \\ [/tex]

[tex]∆x = covered \: \: distance[/tex]

_________________________________

[tex] {v}^{2} - ({0})^{2} = 2 \times 10 \times 13 [/tex]

[tex] {v}^{2} = 2 \times 2 \times 5 \times 13 [/tex]

[tex]v = \sqrt{ {2}^{2} \times 65 } [/tex]

[tex]v = 2 \sqrt{65} \: \: \frac{m}{s} [/tex]

Done.....♥️♥️♥️♥️♥️

Answer:

84 J

Explanation:

Work by mover:

W = Fd

W = 496 J (2.1 m)

W = 1042 J

Work by dolly and ramp:

W = Fd

W = (mg)d

W = 115 kg (9.8 m/s/s) (0.85 m)

W = 958 J

1042 J - 958 J

= 84 J

The amount of work  spent in overcoming friction is 83.65 J.

From the question,

The amount of work spent in overcoming friction = work done by the mover-potential energy of the refrigerator.

This is expressed mathematically as,

W' = Fd-mgh................... Equation 1

Where W' = work spent against friction, F = force applied, d = distance, m = mass of the refrigerator, g = acceleration due to gravity, h = height.

From the question,

Given: F = 496 N, d = 2.10 m, m = 115 kg, h = 0.85 m

Constant: g = 9.8 m/s².

Substitute these values into equation 1

W' = 496(2.1)-(115×9.8×0.85)

W' = 1041.6-957.95

W' = 83.65 J.

Hence, the amount of work  spent in overcoming friction is 83.65 J

Learn more about friction here: https://brainly.com/question/13683196

Answer:

Explanation:

The force acting on an object given it's mass and acceleration can be found by using the formula

From the question

mass = 1,460kg

acceleration = 2.04 m/s²

We have

force = 1460 × 2.04

We have the final answer as

Hope this helps you

Answer:

Explanation:

To find how long it took the ball to reach the end we use the formula

[tex]t= \frac{d}{v} \\ [/tex]

where

t is the time

d is the distance

v is the velocity

From the question

d = 18 m

v = 7.5 m/s

We have

[tex]t = \frac{18}{7.5} \\ [/tex]

We have the final answer as

Hope this helps you

Answer:

5-2 / 1.8 = 1.66m/s

Explanation:

acceleration = vf-vi / t

vf= 5m/s

vi= 2m/s

t= 1.8 s

The question does not ask for anything in particular. I will calculate the acceleration and distance.

Answer:

The acceleration of the car is [tex]-7\ m/s^2[/tex]

The distance traveled before stopping is 350 m

Explanation:

Constant Acceleration Motion

It's a type of motion in which the velocity of an object changes by an equal amount in every equal period of time.

Being a the constant acceleration, vo the initial speed, vf the final speed, and t the time, the following relation applies:

[tex]v_f=v_o+at\qquad [1][/tex]

The distance traveled by the object is given by:

[tex]\displaystyle x=v_o.t+\frac{a.t^2}{2}\qquad [2][/tex]

The car has an initial speed of v0=70 m/s when the driver sees a cow in the road and steps on the brakes with an (assumed) constant acceleration during t=10 seconds before stopping (vf=0).

With the information provided, we can calculate the value of the acceleration and the distance traveled.

Using the equation [1] we can solve for a:

[tex]\displaystyle a=\frac{v_f-v_o}{t}[/tex]

Substituting the numerical values:

[tex]\displaystyle a=\frac{0-70}{10}=-7\ m/s^2[/tex]

The acceleration of the car is [tex]-7\ m/s^2[/tex]

The distance is now calculated by using [2]

[tex]\displaystyle x=70\cdot 10+\frac{(-7)\cdot 10^2}{2}[/tex]

[tex]\displaystyle x=700-\frac{700}{2}=350\ m[/tex]

The distance traveled before stopping is 350 m

Answer: liquids take the shape of the container they are in, but have definite volume. like liquids the shape of a gas changes with the container. unlike liquids the volume of a gas changes depending on the container it is in

Explanation:

Answer:

liquids flow freely, they take the shape of the container they are in, but have a definite volume. Like liquids, the shape of a gas changes with the container. This is because the atoms in a gas move rapidly and freely to fill any available space. Unlike liquids, the volume of a gas changes depending on the container it

Explanation

Answer:

I think 50%

Explanation:

Because the efficiency of a machine is always less than 100%. And efficiency of a machine is 75%.

So, if 15% input work is lost due to friction then efficiency is maybe 50%.

Answer: false

Explanation:

You have to make sure it doesn’t stay wet

Answer:

x = A sin w t         for SHM where w = angular frequency

sin w t = x / A = .12 / .15 = .8    where w t is the angle in degrees

w t = 53.1 deg       (w itself is in rad / sec)

since v = A w cos w t  

then v / x = w cos w t / sin w t = w / tan w t

w = v / x * tan 53.1 = 1.7 / .12 * tan 53.1 = 18.9 /sec

Also for SHM    w = (k / m)^1/2

m = k / w^2 = 75 / 18.9^2 = .21 kg

Answer:

A

Explanation:

There are three basic forces in aerodynamics: acceleration, which moves an airplane forward; drag, which holds it back; and height, which keeps it airborne. Lift is generally explained by three theories: Bernoulli's principle, the Coanda effect, and Newton's third law of motion.

If you picked it straight up, you lifted it 5 meters.

If you moved it horizontally, it could be ANY distance.

Answer:

5

Explanation:

distance = work / force

d = 35 J / 7 N

d = 5 m

Answer:

16m + 25m + 16m = 57m

the car travelled 57 m

Answer:

No.

Explanation:

Because the acceleration of falling objects is constant and is not affected by mass

Answer: no

The acceleration of an object is equivalent to the gravitational acceleration. The size, shape, and weight of an item are not a cause in the motion of the object. So all objects, regardless of its mass, size, or shape fall freely with the same acceleration.

Answer:

it is created power we use everyday

electricity is made of the flow of electrons.

but its made by a generated by a power plant bye electric generators

brainliest?

use your brain :)

Answer:

51 kg

Explanation:

Answer:

51kg

Explanation:

So his mass is Weight/gravity=500 N / 9.8 m/s^2 = 51 kg.

Answer:

Fun fact

An apple, potato, and onion all taste the same if you eat them with your nose plugged

Explanation: yes