The mass of a football player who weighs 1250N

Answers

Answer 1

Answer:

Ah hah ! That depends on where he weighs 1250N, because
weight depends not only on mass but also on the local gravity.
So the same mass can have different weights in different places,
and the same weight can indicate different mass in different places.

Weight = (mass) x (acceleration of gravity) .

Note: 1250N is almost exactly 281 pounds.

-- If he weighs 1250N on Mars, then his mass is 336.8 kg.

-- If he weighs 1250N on Earth, then his mass is 127.5 kg.

-- If he weighs 1250N on the Moon, then his mass is 770.2 kg.

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What was the hiker's total displacement?A.24 km B.4 km north C.14 km northeast D.0 km

Answers

we can see it as two movements: one on the north-south axis and one on the west-east axis.

On the north-south Axis, the hiker went 8 km north and 4 km south, so in total the hiker went 4 km north (we can subtract one for the other and the direction remains that which was bigger)

On the west-easth Axis, the hiker went 6 km east and 6 km west, so in total the hiker didn't move on this axis! or, he/she moved but then "came back"

So in total, the hiker only moved4 km north - answer B.

Answer:

its b

Explanation:

X-raysUV light waves
Sound waves
Earthquake waves
All of these have which characteristic in common?

Answers

Answer:

They all have the characteristic "energy" in common

Explanation:

Energy is power derived from the utilization of physical or chemical resources, especially to provide light / heat or to work machines. X-rays, UV Light Waves, Sound Waves, and Earthquake Waves all have energy.

A soccer ball is kicked horizontally off a bridge with a height of 36 m. The ball travels 25 m horizontally before it hits the pavement below. What was the soccer ball’s speed when it was first kicked

Answers

Answer:

9.23 m/s

Explanation:

Let, the initial velocity be ux.

The horizontal velocity remans the same. So, time required, t = 25/ux

For vertical component, we know,

h = uy*t + (1/2)*g*t^2 [ g is positive because ball is falling downward ]

Putting in the values, we get,

36 = 0*(25/ux) + 1/2 * 9.81 * (25/u)^2

36 = 3065.625/u^2

u^2 = 85.15625

u = 9.23

[ If there's a problem with the solution, please inform me ]

When a certain isotope, such as Pu-239, is hit by a neutron, it will always splitinto the same smaller nuclei.
true or false?

Answers

Answer:false

Explanation:

Atoms don’t always fission the same way. You saw three different possible fission reactions for U-235

Answer: F

Explanation:

A horizontal force of 90.0 N is required to push a 75.0 kg along a horizontal surface at a constant speed. What is the magnitude of the force of friction (90.0N)

Answers

== You're pushing the load straight along the horizontal surface at a constant speed.

== The speed and direction of the load are not changing, so there is no acceleration.

== From Newton's 2nd law of motion, we know that F = m A . Since A=0, F must also be zero. That means NO NET FORCE is acting on the load.

== But how can that be ? You're pushing it with 90 N !

== The NET force is zero. So something else must be pushing the box, also with 90 N of force, exactly opposite to YOUR force, and they add up to zero.

== THERE's your force of friction !

Final answer:

In this case, the force of friction is 90.0 N. This is inferred from the fact that the object is moving at a constant speed, implying that the force applied is countered by an equal force of friction. This is an application of Newton's first law of motion.

Explanation:

The force of friction can be determined by using the basic principles of physics. In the scenario presented, the box is being moved at a constant speed, which implies that the force of friction is equal to the force applied, 90.0 N. This is because when an object moves at a constant speed, it suggests there is a balance of forces meaning the force you're applying (90.0 N in this case) is battling against an equal force in the opposite direction, this opposing force being the force of friction.

This applies the principles of Newton's first law - an object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force. This equilibrium of forces is what's keeping the box moving at a constant speed.

Learn more about Force of Friction here:

brainly.com/question/30280752

#SPJ3

Compare and contrast the general characteristics of a gas giant planet and one of the inner planets (such as Mercury, Earth, Venus or Mars)? Give two differences and one similarity.

Answers

The gas planets usually have extremely high gravitational pulls, the surface isn't solid (since its a gas planet), and gas planets are larger than the inner planets.
Similarities- These planets all have moons and they both revolve around the sun (obviously).

Hope this helps.

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