Need help on these 2 question ??hurry anyone please

Answer:

[tex]a=190\ m/s^2[/tex]

Explanation:

Mass of a hockey puck, m = 0.17 kg

Force exerted by the hockey puck, F' = 35 N

The force of friction, f = 2.7 N

We need to find the acceleration of the hockey puck.

Net force, F=F'-f

F=35-2.7

F=32.3 N

Now, using second law of motion,

F = ma

a is the acceleration of the hockey puck

[tex]a=\dfrac{F}{m}\\\\a=\dfrac{32.3}{0.17}\\\\a=190\ m/s^2[/tex]

So, the acceleration of the hockey puck is [tex]190\ m/s^2[/tex].

The magnitude of acceleration of the hockey puck is 190 m/s² .

Given data:

The mass of hockey puck is, m = 0.17 kg.

the magnitude of external force on the puck is, F = 35.0 N.

The magnitude of force of friction is, f = 2.7 N.

We need to find the net force acting on the puck first. For that consider the applied force in the x-direction. Then net force is,

F' = F - f

Solving as,

F' = 35.0 - 2.7

F' = 32.3 N

Now, use the Newton's Second law to obtain the magnitude of acceleration (a) as,

F' = ma

Solving as,

32.3 = 0.17 (a)

a = 32.3/0.17

a = 190 m/s²

Thus, we can conclude that the magnitude of acceleration of the hockey puck is 190 m/s² .

Learn more about the Newton's law of motion here:

https://brainly.com/question/13447525

Answer:

D. Newton's first law is sometimes called the relative inertia law.

Explanation:

Newton's first law of motion states that an object at rest will stay at rest and that in motion will stay in motion with same speed and in the same direction unless an unbalanced force acts on it. It is also called the law inertia. Mass and inertia play a role in this law because mass is a quantity that mainly depends on inertia in that a body with more inertial will exhibit more mass.

Answer:

i love devon bostick

Explanation:

cause....... i do

Answer: It was going 4 m/s

Explanation:

Answer:

250 pound = 113 kg i guess

Answer:

1.0 A

Explanation:

Answer:

Explanation:

In order to find the distance covered we use the formula

From the question

velocity = 1.85 km/hr

time = 0.6 hours

We have

distance = 1.85 × 0.6

We have the final answer as

Hope this helps you

Explanation:

Linear momentum= Mass*Velocity

P=mv

P=60*10

P=600Kg m/s

Answer:

300 miles

Explanation:

3*60 + 5*24 = 300

Answer:

1,152 km. Hope this helps!

Explanation:

Answer

it will be less\

Explanation:

Answer:

2.125 m/s^2

Explanation:

Use Newton's second law: Force equals mass times acceleration, F = ma. You know the force (51 N) and you know the mass of the mower (24 kg). Remembering that a Newton is the same as kg-m/s2, solve for acceleration:

F = ma

51 kg-m/s2 = 24 kg * a

2.125 m/s2 =a

If a net external force of 51N is extorted on a 24kg lawnmower parallel to the ground, the acceleration of the mower will be 2.125 m/s².

Given the data in the question;

Net External Force; [tex]F = 51N[/tex]

Mass of the Mower; [tex]m = 24kg[/tex]

Acceleration; [tex]a = ?[/tex]

To determine the acceleration of the mower, we make use of the equation from the Newton's Second Law of Motion:

[tex]F = m\ * \ a[/tex]

Where F is the force exerted, m is the mass and a is the acceleration.

But then, we know that; ( A newton is the same thing as  [tex]1 kg.m/s^2[/tex] )

Hence, Our Net External Force; [tex]F = 51kg.m/s^2[/tex]

We substitute our values into the equation to find acceleration "a"

[tex]51kg.m/s^2 = 24kg\ *\ a\\\\a = \frac{51kg.m/s^2}{24kg} \\\\a = 2.125 m/s^2[/tex]

Therefore, If a net external force of 51N is extorted on a 24kg lawnmower parallel to the ground, the acceleration of the mower will be 2.125 m/s².

Learn more; https://brainly.com/question/12887896

Answer:

A. Ocean to continental convergent

Answer:

The surface with fewer impact craters is a newer surface. It hasn’t been impacted as many times as the older surfaces

Explanation:

Sample Answer

Answer:

Newer surfaces are less damaged by impact craters, because they are less damaged by impact.

Explanation:

This is my answer.

Answer: changes will result from adjusting the temperatures of two sealed soda

Explanation:

the preasure builds up and makes the bottle expand so it might crack but the other one will become ice then will crack the sides

Answer:

changes

Explanation:

Answer:

about 10 milliamperes

Explanation:

currents above 10ma can paralize or "freeze bodies"

Answer:    The strong nuclear force is one of the four fundamental forces in nature; the other three are gravity, electromagnetism and the weak force. As its name implies, the strong force is the strongest force of the four. It is responsible for binding together the fundamental particles of matter to form larger particles

Answer:

the answer is C

I hope I helped (◍•ᴗ•◍)❤

Answer:

Atomic number is the number of protons in the nucleus. The mass number of an atom tells you the total number of protons and neutrons in the nucleus.

Answer:

A transistor works when the electrons and the holes start moving across the two junctions between the n-type and p-type silicon. ... By turning a small input current into a large output current, the transistor acts like an amplifier. But it also acts like a switch at the same time.

Explanation:

Answer:

d. silicone is shiny and is a poor conducted of electricity​

The best option that describes an example of a chemical property of an element is silicone is shiny and is a poor conductor of electricity​. Option D is correct.

The chemical properties of elements are those properties that are noticeable during the course of a chemical reaction.

Aluminum is solid but not at room temperature. The elements that are solid at room temperature are iron, zinc, gold, and silver. Hence option is incorrect.  The same is applicable to options B and C.

The best option that describes an example of a chemical property of an element is silicone is shiny and is a poor conductor of electricity​

Learn more here: https://brainly.com/question/19038555

Answer:

0.782 seconds

Explanation:

We are given that the ball starts out on a hill that is 3 m above a level field below. And that the ball is kicked horizontally. We are asked how long the ball takes to hit the ground 3 meters below.

On closer consideration of the given situation, it is important to realize that even though the ball starts out with a speed of 10m/s in the horizontal direction, that this will not make a difference in how fast the ball travels in the vertical direction (which is what the question is basically asking for). Hence for this question, we can ignore the initial horizontal speed of the ball and realize that the initial vertical speed is 0 m/s.

Recall that one of the equations of motion can be expressed as:

s = ut + (1/2) at²       (refer to attached for reference)

where,

Applied in the vertical direction,

s = vertical distance travelled = 3 meters in this case

u = initial vertical velocity = 0 m/s in this case

a = acceleration due to gravity, g = 9.81 m/s²

t = time taken ( we are asked to find this)

simply substituting the known values above into the equation:

s = ut + (1/2) at²

3 = 0 + (1/2) (9.81)t²

3 = 4.905t²

t² = 3 / 4.905

t² = 0.61162

t = √0.61162

t = 0.782 seconds

Answer: 46 kph

Explanation:

191 ÷ 4.15 = 46.02

It might not be right

Answer:

B

Explanation:

Answer:

It helps melt the ice away on their walkway.

Explanation:

The salt makes the ice to freeze at a lower temperature. So when a solute (salt) comes into contact with the ice the freezing point is lowered.

Answer:

However, to mention a few, there are other units of speed such as meters per second, feet per second, light-years per millennium, and knots. Feet per second, but specially meters per second are usually used to measure speed of animals, humans, and free fall objects. Knots is used to measure the speed of ship and/or boats.

Explanation:

Condensation is the water on the outside of a cold cup of water on a hot day.