The law of conservation of momentum states that, if left alone, what happens to the total momentum of two interacting objects that make up a system?

Answer:

Mass

The kilogram (kg) is the SI unit of mass and it is the almost universally used standard mass unit.

Gravity and weight

Since the acceleration due to the force of gravity (g) equals aproximately 9.8 meters/s2, the weight of an object with a mass of 1 kilogram is 9.8 newtons under standard conditions on the Earth's surface.

Answer:

The mass of an object is a measure of the object's inertial property, or the amount of matter it has in it

The weight of an object is a measure of the force/impact  exerted on the object by gravity, or the force needed to support it

The pull of gravity on the earth gives an object a downward acceleration of about 9.8 m/s2.

Hope This Helped

Answer:

A

Explanation:

A has the most potential energy as it is higher up so it has the most gravitational potential energy.

The force of gravity vary inversely with square of distance between two objects.

The force of attraction felt by a person which is directed at the center of a planet or Earth is called as the gravity.

The force of attraction is directly proportional to the product of masses of the object and inversely proportional to the square of distance between them.

F = GMm/d²

here G is the gravitational constant.

If the distance changes, the force of gravitation changes. The mass remains the same.

Thus, the force of gravity vary inversely with square of distance between two objects.

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Answer:

5.9 × 10⁶m

Explanation:

                         = 12.7×10⁶ - 6.8 × 10⁶

                         = 5.9 × 10⁶m

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Answer:

Absolutely no real-life phenomena/ uses are possible that are related to any branch of physics, except:

1 The device you are reading this answer on. (quantum mechanics, electronics )

2 The air conditioner in your room. ( electromagnetism, electronics )

3 The satellites and space stations in space which will help in the deciphering of the universe will help us look for a suitable planet when we render the earth useless. ( general and special relativity, classical mechanics )

4 Ohh. I forgot, do you wear clothes, well they are made in factories where factories run on the principles of thermodynamics, which is physics.

5 Ever gone somewhere? Well, the transportation uses classical mechanics, thermodynamics, electromagnetism, relativity ( if you know Global Positioning System )

6 GPS itself! It’s used in online maps, navigating, and this sort of stuff. It works on general relativity.

Honestly, this list is endless.

Hello!

Using the equation for the magnetic force on a current-carrying wire:
[tex]F_B = \vec{B} \times i\vec{L}[/tex]

[tex]F_B[/tex] = Magnetic Force (0.38 N)
B = Magnetic field strength (T)
i = Current in wire (4.75 A)
L = Length of wire (0.25 m)

This is a cross product, so we can rewrite the equation as:
[tex]F_B = BiLsin\phi[/tex]

Where φ is the angle between the magnetic field vector and the length vector. In this instance, since the field is perpendicular to the wire, sin(90) = 1. We can simplify the equation to:
[tex]F_B = BiL[/tex]

Rearrange the equation to solve for 'B':
[tex]B = \frac{F_B}{iL}[/tex]

Plug in given values and solve.

[tex]B = \frac{0.38}{(4.75 * .25)} = \boxed{0.32 T}[/tex]

The strength of the magnetic field will be 0.32 T.Option B is correct.

The number of magnetic flux lines on a unit area passing perpendicular to the given line direction is known as induced magnetic field strength .it is denoted by B.

Given data:

(I) current = 4.75-A

(B)induced magnetic field strrength=?

(L)length of the wire=0.25-m

(F)Magnetic force=0.38 N

The strength of the magnetic field is found as:

[tex]\rm F_B=BILsin \theta \\\\\ \theta = 90^0 \\\\ \rm F_B=BIL \\\\[/tex]

Substitute the values:

[tex]\rm 0.38 = B \times 4.75 \times 0.25 \\\\\ B= \frac{0.38}{4.75 \times 0.25 } \\\\\ B=0.32 \ T[/tex]

The strength of the magnetic field will be 0.32 T.

Hence, option B is correct.

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Total internal reflection causes light to be completely reflected across the  boundary between the two media but not transmitted.

The term total internal reflection occurs when light is moving from a denser to a less dense medium such as from glass to air. This phenomenon occurs at the interface between the two media.

There are two conditions necessary for total internal reflection and they are;

1) Light must travel from a denser to a less dense medium

2) The angle of incidence in the denser medium must be greater than the critical angle.

Total internal reflection causes light to be completely reflected across the  boundary between the two media but not transmitted.

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Answer:

Option C

Explanation:

According to the formula

So

If we use wide wire we increase the area of cross section so resistance decreases

The maximum height the ball will reach 7.316 ft. This height is less than a standard soccer goal's height.

When an object is thrown at an angle from the horizontal direction, the object is said to be in projectile motion. The object which follows the projectile motion is called the projectile.

Maximum height reached is given by

H = u²sin²θ /2g

where, u = initial velocity, θ is the angle of projection and g is the gravitational acceleration.

Consider the soccer ball is kicked toward a goal at a speed of 35 mph and an angle of 25 ° from horizontal,

Given is the speed 35mph = 35 x 1609/3600 = 15.65 m/s, θ =25 ° and g = 9.81 m/s²

Substituting the values, we get

H = (15.65)² (sin25 °)² / 2 x 9.81

H = 2.23 m

in feet, H = 7.316 ft

Thus, the maximum height is 7.316 ft. This height is less than  a standard soccer goal's height, which is 8 feet from the ground.

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You can find the magnitude of the resultant vector : (B). By adding the magnitudes of the two vectors

A vector can be defined as any quantity which possesses magnitude and also has direction.

A Vector quantity is very useful because This type of quantity gives more details to the student or teacher analyzing it.

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By applying the second equation of motion, the speed at which he threw the second stone is equal to 12.10 m/s.

First of all, we would calculate the time taken by the first stone to reach a height of 49 meters by applying the second equation of motion as follows:

S = ut + ½gt²

49 = 0(t) + ½ × 9.8 × t²

49 = 4.9t²

t² = 49/4.9

t = √10

t = 3.16 seconds.

Now, we can determine the speed at which he threw the second stone:

Note: Time = 3.16 - 1 = 2.16 seconds.

S = ut + ½gt²

49 = u(2.16) + ½ × 9.8 × 2.16²

49 = 2.16u + 22.86

2.16u = 49 - 22.86

u = 26.14/2.16

u = 12.10 m/s.

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The spinning turbine converts mechanical energy into electrical energy that is converted into light energy used to light up the house.

The law of conservation of energy states that energy can neither be created nor destroyed but can be transformed from one form to another.

The spinning turbine works on the principle of mechanical energy.

Thus, the spinning turbine converts mechanical energy into electrical energy that is converted into light energy used to light up the house.

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By applying the relationship of side lengths to interior angles in a triangle, a possible measure of line segment TS is 4.0 ft.

In Geometry, the relationship of side lengths to interior angles in a triangle include the following:

Based on the above theory, we can logically deduce that angle GF < TS or TS > GF because 42° is greater than 56°.

TS > 3.2 ft.

Therefore, a possible measure of line segment TS is 4.0 ft.

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Complete Question:

In the triangles, TR = GE and SR = FE. If Line segment G F = 3.2 ft, which is a possible measure of Line segment TS? 1.6 ft 3.0 ft 3.2 ft 4.0 ft.

The quarks that compose a baryon may have charges of +(2/3)e and -(1/3)e which means have negative and positive charges.

Quarks are the most fundamental particles that make up the atomic nucleus. All solid matter that we know is made of three particles, which are the up and down quarks, 'u' and 'd', and the electron.

Quark is one of the two basic elements that make up matter and is the only one of the particles that interacts through all four fundamental forces.

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The separation between the lines of the grating is 13.33μm.

The diffraction grating is the continuous lines with very minute slits or grating space in mm.  It divides light composed of various wavelengths into light components by particular wavelength.

dsinθ = nλ

Substitute n =3, λ =490 x 10⁻⁹ m and angle θ =6.33°, we get

d = [3 x 490 x 10⁻⁹ /sin 6.33°]

d = 13.33 x 10⁻⁶ m

Thus, the separation between the lines of the grating is 13.33μm.

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The magnitude of the acceleration of the car is determined as 1.11 m/s².

The acceleration of the train is determined as the rate of change of velocity with time.

The magnitude of the acceleration of the car is calculated as follows;

a = v/t

a = 50/45

a = 1.11 m/s²

Thus, the magnitude of the acceleration of the car is determined as 1.11 m/s².

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Answer:

A wheel on a car, however, rotates around the car's axle, so it does have rotational motion. For this example, if you were to pick a single point on the edge of the wheel, you could also say that it has circular motion.

Answer:

Explanation:

Remark

If both are trying to get the box into storage and they can only  use lifting to do it, then Jude won't be able to do it. This assumes they cannot slide the boxes. Jude is not using enough force to overcome gravity so the box will just sit.

On the other hand Jamel is putting enough force to not only lift the box but it will move upwards against gravity. If we ignore that fact, then Jamel will get his box into storage.

Answer: A

Explanation:

w = mg

on earth

w = mg

w = 60 × 9.8 = 588 N

on moon

w = mg

w = 60 × 1.6 = 96 N

on Mars

w = mg

w = 60 × 3.7 = 222 N

In this question,we solve it using the formulae below:

W=mg.

So to find the weight of the object in 1.Earth.Enter the given data on formula:

W=mg

W=60×9.8

2.Weight on the moon.

W=mg

W=60×1.6

3.Weight on Mars.

W=mg

W=60×3.7

The birds, bats, insects, airplanes, rockets, and hot air balloons achieve their flight by creating high pressure below the aircraft and low pressure above it

They both consist of fundamentally simple building blocks. They are composed of substances or mass. Atmospheric and molecular building blocks make up the world.

In order to create high pressure below the aircraft and low pressure above it, airplanes employ specially built wings.

The wing receives sufficient airflow past it to counteract the weight and drag of the aircraft by utilizing a device to provide thrust, such as a propeller.

High pressure underneath the aircraft and low pressure above it is produced by specially constructed wings used by airplanes.

The wing receives enough airflow through it by the use of a thrust-generating device, like a propeller, to overcome the weight and drag of the aircraft.

The differences between how living and non-living things fly;

1. Moving both living and non-living objects consumes energy. Flying animals utilize their wings to create both lift and propulsion by moving them in relation to the body.

In contrast to most air vehicles, where the components that generate lift, wings, and thrust engines or propellers are distinct, the wings stay stationary.

Animal aviators like birds as well as natural parachuters like patagial as well as human inventions like aircraft as well as rockets that can power spacecraft and spaceplanes are just a few examples of the many things that can fly.

Hence, birds, bats, insects, airplanes, rockets, and hot air balloons achieve their flight by creating high pressure below the aircraft and low pressure above it

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Let the upstream breadcrumb's position act as the origin, so the position at time [tex]t[/tex] of upstream crumb [tex](B_U)[/tex], duck [tex](D)[/tex], and downstream crumb [tex](B_D)[/tex] are, respectively,

[tex]x_{B_U} = \left(2.0\dfrac{\rm m}{\rm s}\right) t[/tex]

[tex]x_D = d\,\mathrm m + v_D t[/tex]

[tex]x_{B_D} = 2d\,\mathrm m + \left(2.0\dfrac{\rm m}{\rm s}\right) t[/tex]

where [tex]d[/tex] is the distance (in m) between the duck and either crumb at the start, and [tex]v_D[/tex] is the velocity of the duck relative to the Earth.

To get both breadcrumbs, the duck has to choose between chasing the upstream or downstream crumb first.

• If the upstream crumb is chosen first, then [tex]v_D[/tex] is 2.0 - 1.0 = 1.0 m/s. Find the time it takes for the duck to reach the upstream crumb:

[tex]x_{B_U} = x_D \implies \left(2.0\dfrac{\rm m}{\rm s}\right) t = d + \left(1.0\dfrac{\rm m}{\rm s}\right) t \\\\ \implies t = d \, \mathrm s[/tex]

In this time, the duck covers a distance of

[tex]x_D = d\,\mathrm m + \left(1.0\dfrac{\rm m}{\rm s}\right) (d\, \mathrm s) = 2d \, \mathrm m[/tex]

while the downstream crumb will have traveled a distance of

[tex]x_{B_D} = 2d\,\mathrm m + \left(2.0\dfrac{\rm m}{\rm s}\right) (d \,\mathrm s) = 4d \,\mathrm m[/tex]

putting a total distance of [tex]2d+4d=6d\,\mathrm m[/tex] between the duck and the remaining crumb.

Take the duck's new position to be the new origin. When the duck turns around and travels with the current, its speed [tex]v_D[/tex] will be 2.0 + 1.0 = 3.0 m/s. Then at time [tex]t[/tex], the duck and remaining crumb have position relative to the new origin given by

[tex]x_D' = \left(3.0\dfrac{\rm m}{\rm s}\right) t[/tex]

[tex]x_{B_D}' = 6d \,\mathrm m + \left(2.0\dfrac{\rm m}{\rm s}\right) t[/tex]

Find the time the duck needs to catch up to the downstream crumb:

[tex]x_D' = x_{B_D}' \implies \left(3.0\dfrac{\rm m}{\rm s}\right) t = 6d\,\mathrm m + \left(2.0\dfrac{\rm m}{\rm s}\right) t \\\\ \implies t = 6d \,\mathrm s[/tex]

Then the total time the duck needs to get both crumbs is [tex]d + 6d = 7d \,\mathrm s[/tex].

• If instead the downstream crumb is chased down first, we start with [tex]v_D[/tex] = 3.0 m/s, so that

[tex]x_D = x_{B_D} \implies d\,\mathrm m + \left(3.0\dfrac{\rm m}{\rm s}\right) t = 2d\,\mathrm m + \left(2.0\dfrac{\rm m}{\rm s}\right) t \\\\ \implies t = d \, \mathrm s[/tex]

In this time, the duck covers a distance of

[tex]x_D = d\,\mathrm m + \left(3.0\dfrac{\rm m}{\rm s}\right) (d\,\mathrm s) = 4d \,\mathrm m[/tex]

while the upstream crumb moves

[tex]x_{B_U} = \left(2.0\dfrac{\rm m}{\rm s}\right) (d\,\mathrm s) = 2d \,\mathrm m[/tex]

The distance between the duck and remaining crumb is then [tex]4d-2d=2d\,\mathrm m[/tex]. Now the duck turns around with speed [tex]v_D[/tex] = 1.0 m/s. If the crumb's new position is taken to be the origin, then

[tex]x_{B_U}' = \left(2.0\dfrac{\rm m}{\rm s}\right) t[/tex]

[tex]x_D' = 2d\,\mathrm m + \left(1.0\dfrac{\rm m}{\rm s}\right) t[/tex]

Find the time it takes for the duck to get the last crumb:

[tex]x_{B_U}' = x_D' \implies \left(2.0\dfrac{\rm m}{\rm s}\right)t = 2d\,\mathrm m + \left(1.0\dfrac{\rm m}{\rm s}\right) t \\\\ \implies t = 2d\,\mathrm s[/tex]

Then the duck can get both crumbs in a total of [tex]d+2d=3d\,\mathrm s[/tex].

To get both crumbs in the shortest time, the duck should go after the downstream crumb first. This path over 2 times faster than the other.

Answer:

I say 150 because i aded 850+150= 1000 so yea thats how i got my answer

Explanation:

Answer:

5 m/s²

Explanation:

Acceleration = change in speed/time taken

20-5=15

15/3= 5 m/s²

Answer:

There is a net force of 2 N to the left.

With 8 N to the left the up/down and left/right forces are in balance.

The force left over is 2 N to the left.