An object has a mass of 0.25 kg what is the gravitational force of on the object by the earth?

Answers

Answer 1

Answer:
"Weight" = (mass) x (acceleration of gravity)

   = (0.25 kg) x (9.8 m/s²)

   = 2.45 newtons (about 8.8 ounces of force).

-- The Earth pulls on the object with 2.45 newtons of force.
    (The object weighs 2.45 newtons on Earth.)

-- The object pulls on the Earth with 2.45 newtons of force.
    (The Earth weighs 2.45 newtons on the object.)

Answer 2

Answer:

(0.25) * (10) = 2.5 Newtons

Explanation:

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An object has an acceleration of 0 m/s². Does this mean that the object must be stationary?

Answers

No. Having '0' acceleration means not speeding up in any directions. If an object had speed before it's acceleration became '0' and if the object is not stopped the object will keep moving with constant velocity.

Zero acceleration means that the object's motion is not changing. That tells
you that the object's velocity is constant ... it's moving in a straight line at a
steady speed (which may be zero).

Which of the following activities would have the highest excessive momentum?a. golf
b. gymnastics
c. tennis
d. wrestling

Answers

Either B. or C. I am pretty sure it is B.

Answer:

Explanation:

The answer is b. gymnastics

Please help me! In a collision, Kara Less who was traveling at 11 m/s while texting in her 1300 kg car, is struck by another vehicle and finds herself and her phone suddenly moving 2.5 m/s in the opposite direction. What impulse does she experience? SHOW WORKAnswer Choices

A. -12,000
B. -14,000
C. -16,000
D. -18,000

Answers

Answer:

D. -18,000

Explanation:

Let's define impulse :

Impulse is defined as the product of Force ( N ) applied on the body and the time of impact ( s ) or
The change in momentum

hence in this question ,

kara is initially moving with the :

velocity $v_(i)$ = 11 $ms^(-1)$

finally moving with velocity $v_(f)$ = -2.5 $ms^(-1)$ (minus as she moves in the opposite direction )

therefore the initial momentum $p_(i)$ = $m*v_(i) = 1300*11 = 14300 kgms^(-1)$

and the final momentum $p_(f)$ = $m*v_(f) = 1300*-2.5= 3250 kgms^(-1)$

thus the change in momentum : $p_(f)$ - $p_(i)$

= -3250-14300 = -17550 $kgms^(-1)$ ≅ -18000 $kgms^(-1)$

[01.02]The captain told the passengers that the plane is flying at 450 miles per hour. This information describes the plane's

1 velocity.
2 speed.
3 acceleration.
4 direction.

Answers

Answer : speed

Explanation :

Speed is defined as the distance travelled per unit time. It is a scalar quantity.

Velocity is displacement covered per unit time. It is a vector quantity. This means it have both magnitude as well as direction.

When captain told the passengers that the plane is flying at 450 miles per hour, then this shows the speed of plane. He is not talking about the direction in which the plane is flying.

So, this information describes the speed of plane.

Correct option is (2).

That information describes the plane's speed.
If he had also told them what direction they were flying, then
they would have been able to put the two pieces of information
together, and they would know the plane's velocity.

Cell phones use digital signals to send and receive information. These digital signals travel as what kind of wave?ОООО
Gamma rays
X-rays
Microwaves
Radio waves

Answers

the answer would be microwaves!

Answer:

Microwaves

Explanation:

Explanation:

What is the total number of orbitals containing only one electron in an atom of nitrogen in the ground state?1
2
3
4

Answers

Answer: 3

Explanation:

Nitrogen is in subshell p which can only hold 6 electrons, therefore, it has three orbitals. Since Nitrogen has three electrons in this subshell, only one electron is in each orbital.

c is the answer. nitrogen is in subshell p and this subshell can hold 6 electrons therefore it has 3 orbitals. since nitrogen has three electrons in this subshell, only 1 electron is in each shell. hope that helps.

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