What is the mass of a large dog that weighs 441 newtons

Answers

Answer 1

Answer: Weight, w = mg. g ≈ 9.8 m/s². m = mass in kg. w is weight in N

441 N = m* 9.8

9.8m = 441

m = 441/9.8

m = 45 kg.

Mass of the dog is = 45 kg

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A 1,000 kg ball traveling at 5 m/s would have kinetic energy

Answers

Answer:

12500 J = 12.5 kJ

Explanation:

Kinetic energy is the energy possessed by a moving object solely due to its motion.

You can get the K.E. of an object using the equation,

K.E. = (1/2)mv²

So you get, for ball

K.E. = (1/2)×1000×5² = 12500 J = 12.5 kJ

Which geologic feature is most likely to form at a mid-ocean ridge: Peninsula, volcano, delta, or plateau?

Answers

Answer:

The answer is: volcano.

Explanation:

The mid-ocean ridges are underwater elevations located in the middle part of the Earth's oceans.

The chain has a very rugged relief, with wide slopes and ridges often marked by a deep longitudinal recess, called the sinking or rift valley, along which numerous surface earthquakes and volcanic eruptions occur that pour basalt lavas.

The answer is: volcano.

it is a volcano that is the answer.

What the core muscles do and why it's important to have a strong set of core muscles.

Answers

Answer:

The core muscles stabilize and protect the spine. They help control all movements and make it possible for us humans to walk and stand up right. The core helps us transfer energy, shift our body weight and reach/move in different directions. It is important to have a strong set of core muscles because it makes everyday activities easier.

Y.w

What is the action force and the reaction force when you sit down

Answers

The action force is swift smoove and easy

A 50-kg ice skater is holding a 3-kg ball, moving at a steady +5 m/s. She then throws the ball backwardsat -10 m/s, if so what would her final velocity be?

Answers

Answer: 5.9 m/s

Explanation:

This problem can be solved by the Conservation of Momentum principle, which establishes that the initial momentum $p_(o)$ must be equal to the final momentum $p_(f)$ :

$p_(o)=p_(f)$ (1)

Where:

$p_(o)=(m_(1)+m_(2))V_(o)$ (2)

$p_(f)=m_(1)U_(f)+m_(2)V_(f)$ (3)

$m_(1)=50 kg$ is the mass of the skater

$m_(2)=3 kg$ is the mass of the ball

$V_(o)=5 m/s$ is the initial velocity of the skater and the ball

$V_(f)=-10 m/s$ is the final velocity of the ball

$U_(f)$ is the final velocity of the skater

Substituting (2) and (3) in (1):

$(m_(1)+m_(2))V_(o)=m_(1)U_(f)+m_(2)V_(f)$ (4)

Isolating $U_(f)$ :

$U_(f)=((m_(1)+m_(2))V_(o)-m_(2)V_(f))/(m_(1))$ (5)

$U_(f)=\frac{(50 kg+3 kg)5 m/s}-(3 kg)(-10 m/s)}{50 kg}$ (6)

Finally:

$U_(f)=5.9 m/s$

Give an example of a situation in which you would describe an object's position in one dimension two dimensions three dimension

Answers

One dimension:
I'm waiting patiently for the elevator. What floor is it on now ?

Two dimensions:
What's the address of your house ?
Where do you want this picture hung on your bedroom wall ?
Where is the Maersk Skokie supertanker located today ?
Where are your rooks and pawns on the chessboard ?

Three dimensions:
I'm waiting at the airport for my brother to arrive.
He's on Flight AC3715.
Where is the flight located right now ?

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