Can someone please help me with this

Answer:

Skills required to play floor hockey include passing, receiving passes, shooting, stick- handling (dribbling), defensive skills and goaltending. Players are allowed to use both sides of the blade of the stick. The front side is called the forehand (face) and the back side is called the backhand.

Answer: Hot

Explanation: Scientist use the color of starts to determine how hot the surface temperature is.

[tex]\vec{p}=m\vec{v}\\p = 1000 * 35=35000[\frac{kg*m}{s}][/tex]

Answer:

support the structure of ur body

Explanation:

it gives the body its shape,allows movement,and also provides protection for ur organs

Answer:

The skeletal system works as a support structure for your body. It gives the body its shape, allows movement, makes blood cells, provides protection for organs and stores minerals. The skeletal system is also called the musculoskeletal system

Explanation:

Answer:

0.125

Explanation:

acellus

Answer:

No information can be concluded from this observation alone the cloud is much cooler than hydrogen on Earth

Answer:

Part A

The nature of the lens required is a concave lens

Part B

The power of the lens required is -1.25 D

Explanation:

Part A

Myopia is the eye condition whereby the focus of light entering the eye is in front of the retina such that the vision of a myopic person is blurred

The given far point of the myopic person in question = 80 cm

To correct the problem, the focus of light entering the eye will be moved further to reach the retina, by means of a concave lens which makes distant objects appear to come from (form an image at) 80 cm

Part B

The lens formula is given as follows;

[tex]\dfrac{1}{f} = \dfrac{1}{d_o} + \dfrac{1}{d_i}[/tex]

Where;

f = The focus of the lens (virtual focus)

[tex]d_o[/tex] = The distance of the object = ∞ (infinity)

[tex]d_i[/tex] = The distance of the image = -80 cm (virtual image formed in front of the mirror)

Plugging in the values, gives;

[tex]\dfrac{1}{f} = \dfrac{1}{\infty} + \dfrac{1}{-80 \, cm} = \dfrac{1}{-80 \, cm}[/tex]

[tex]\therefore \dfrac{1}{f} = \dfrac{1}{-80 \, cm}[/tex]

f = -80 cm = -0.8 m

The power of a lens, 'P' is the reciprocal of the focal length, 'f', given in meters

[tex]P = \dfrac{1}{f (in \, meters)}[/tex]

The SI unit for the power of a lens is the dioptre (D)

Therefore;

[tex]P = \dfrac{1}{-0.80 \, m} = -1.25 \, D[/tex]

Therefore, the power of the lens required, P = -1.25 D.

Saturn is a planet in solar system. It's ring is made out of small covered ice particle. It has over 30 moons.

Answer:

b and c

Explanation:

you had it correct :)

Answer:

It's C and D.

Explanation:

Answer: 324.135 kJ

Explanation:

Given

Mass of dropping is [tex]m=2250\ kg[/tex]

The initial height of dropping is [tex]h_1=16\ m[/tex]

The final height of dropping [tex]h_2=1.3\ m[/tex]

Gravitational potential energy is the function of height i.e.

[tex]\Rightarrow \text{G.E.}=mgh[/tex]

Change in Gravitational Energy is

[tex]\Rightarrow \Delta \text{G.E.}=mg(h_1-h_2)=2250\times 9.8\times (16-1.3)\\\\\Rightarrow \Delta \text{G.E.}=3,24,135\ J\approx 324.135\ kJ[/tex]

Answer: None

Explanation:

    Since the wall did not move, it does not matter how much force you generated. You did no work in the physics sense.

    Work is calculated by multiplying the displacement by the force. Since there was no displacement (no movement) we put the value as 0. 0 times anything is still 0, as shown below.

2500 N * 0 = 0.

    You did no work, or 0 J of work.

Yes Convex Lens Can form virtual images which are magnified, provided the object distance, measured from the optical centre must be less than focal length.

For your question,

let focal length, f = + 6 cm

let object distance be 'u'

let image distance be 'v'

magnification required, m = +3, +ve because image will be erect, according to the property of convex lens:

Answer:

tmospheric pressure, force per unit area exerted by an atmospheric column (the entire body of air above the specified area)

Answer:

Q = 200800 Joules.

Explanation:

Given the following data;

Mass = 4kg

Initial temperature = 30.0°C

Final temperature = 90.0°C

Specific heat capacity of glass = 837 J/kg°C

To find the quantity of heat absorbed;

Heat capacity is given by the formula;

[tex] Q = mcdt[/tex]

Where;

Q represents the heat capacity or quantity of heat.

m represents the mass of an object.

c represents the specific heat capacity of water.

dt represents the change in temperature.

dt = T2 - T1

dt = 90 - 30

dt = 60°C

Substituting the values into the equation, we have;

[tex] Q = 4*837*60[/tex]

Q = 200800 Joules.

Therefore, the amount of heat absorbed is 200800 Joules.

Answer:

if 2ohms gives 5A

then 5ohms will give 12.5A

since its directly proportional

V=IR

Answer:

Hey mate....

Explanation:

This is ur answer.....

Another way to measure the strength of an earthquake is to use the Mercalli scale. Invented by Giuseppe Mercalli in 1902, this scale uses the observations of the people who experienced the earthquake to estimate its intensity.

Hope it helps you,

Mark me as the brainliest....

Follow me!!! :)

Answer:

Hey man, are you who I think you are? ... you used your student number on your account.... anyways im in your class :) guess who I am for free points. so the formula for period is Period=Wavelength/Velocity, so P=.85/velocity, to find velocity would be using the formula speed=distance/time, so the velocity is 2000/9.8 which is around 204.0816327.... so back to period formula, P=.85m/204.08 which gives a period of .004165. But im not entire sure so you have to check that on your own. (gl guessing who I am. hehe)

Explanation:

Answer:

D) No, because of the way work is defined

Explanation:

There is no motion in the direction of the force, then no work is done by that force. ... But the work done on the box is zero since by moving in a straight line at constant speed, its energy is remaining the same.

Hope it helps

Please mark me as the brainliest

Thank you

Answer:

Hello your question is vague hence I will provide a general answer on the importance of : Waste reduction, rationalization of consumption, reuse, recycling as ways of preserving the natural resources

answer :

Waste reduction : when we reduce the amount of wastage on items we use especially items produced from natural raw materials we will help preserve the natural resource because they can be used to produce varieties of other items

Reuse and recycling of waste products help keep our natural environment healthy thus preserving our natural resources.

Explanation:

Waste reduction, rationalization of consumption, reuse and recycling are all ways of preserving our natural resources

Waste reduction : when we reduce the amount of wastage on items we use especially items produced from natural raw materials we will help preserve the natural resource because they can be used to produce varieties of other items

Reuse and recycling of waste products help keep our natural environment healthy thus preserving our natural resources.

Answer: lots of them

Explanation:

Answer:

the total energy before collision is 12.25J

the total energy after collision is tranfered to sound and heat (by the friction between the two clay balls)

Explanation:

first we should know the velocity of the 2 balls:

momentum=mass ×velocity

we have the momentum and the mass of the 2

so momentum ÷mass=velocity

clay ball 1 velocity=7 m/s & clay ball 2 velocity= -7 m/s

KE=1/2 mv²

1/2 ×0.25×7²=6.125J KE of ball 1

1/2 ×0.25×-7²=6.125J KE of ball 2

add them both we will have 12.25J which is before collision

this energy will then be tranfered to heat and sound as they stop after the collision(velocity =0m/s)

Answer:

The boat pushes back on the girl with an equal force of 100N

Explanation:

Newton's third law of forces explains that action and reaction are equal and opposite. This means that for every action of a force, there is an equal but opposite reaction.

In our case, as the girl pushes on the boat with a force of 100N, the boat pushes back with a force of 100N also, following Newton's third law

Answer:

Velocity is a vector (it has magnitude and direction), so the overall velocity of an object can be found with vector addition of the x and y components: v2 = vx2 + vy2. The units to express the horizontal and vertical distances are meters (m).

Answer:

1) Similarity:

1. diatomic molecules.

2. nonpolar covalent bond.

3. gaseus state at room temperature.

4. very reactive, with high electronegativity.

Answer:

reflection and refraction?

Explanation:

XOXO

Kit

Answer:

[tex]y = \frac{ - 1}{3}x + \frac{7}{3} [/tex]

Explanation:

[tex] \frac{y - 3}{2 - 3} = \frac{x + 2}{1 + 2} \\ \ - y + 3 = \frac{x + 2}{3} \\ y = \frac{ - 1}{3}x + \frac{7}{3} [/tex]

Answer:

В. An object with mechanical energy is always able to perform work.

Explanation:

Energy can be defined as the ability (capacity) to do work. The two (2) main types of energy are;

a. Gravitational potential energy (GPE): it is an energy possessed by an object or body due to its position above the earth.

b. Kinetic energy (KE): it is an energy possessed by an object or body due to its motion.

Furthermore, the mechanical energy of a physical object or body is the sum of the potential energy and kinetic energy possessed by the object or body and it is measured in Joules.

Mathematically, it is given by the formula;

Mechanical energy = G.P.E + K.E

Hence, the true statement is that an object with mechanical energy is always able to perform work.

Answer:

B

Explanation:

Answer:

В. An object with mechanical energy is always able to perform work.

Explanation:

Energy can be defined as the ability (capacity) to do work. The two (2) main types of energy are;

a. Gravitational potential energy (GPE): it is an energy possessed by an object or body due to its position above the earth.

b. Kinetic energy (KE): it is an energy possessed by an object or body due to its motion.

Furthermore, the mechanical energy of a physical object or body is the sum of the potential energy and kinetic energy possessed by the object or body and it is measured in Joules.

Mathematically, it is given by the formula;

Mechanical energy = G.P.E + K.E

Hence, the true statement is that an object with mechanical energy is always able to perform work.

Answer:

It moves faster when its further away

Explanation:

It happens in early January about 2 weeks after the Northern winter solstice