Put the following objects in order of increasing momentum: a parked car, a train moving at 50 km/h, a train moving at 80 km/h, a car moving at 50 km/h.

Answer:

B

Explanation:

Answer:

The Answer is A

Explanation:

Answer:

the wind

Explanation:

Answer:

Distance

Explanation:

trust me

Answer:

The distance "r" must be squared

Explanation:

In the equation F=GMm/r^2, the distance "r" is squared, which represents the distance between masses M and m and G is the gravitational constant.

Answer:

[tex]H=\frac{V^2}{R}[/tex]

Explanation:

Let H be  heat produced per sec

Time, t=1 sec

Resistance of resistor=R ohm

We have to write down the expression for the  heat produced per second in a resistor in terms of potential difference and resistance​.

We know that

Heat, [tex]H=I^2 Rt=\frac{V^2}{R}t[/tex]

Substitute the value

Then, we get

Heat,[tex]H=\frac{V^2}{R}\times 1[/tex]

[tex]H=\frac{V^2}{R}[/tex]

This is required expression for the heat produced per second in a resistor  in terms of potential difference and resistance​.

Answer:

1350N

Explanation:

Given data

mass= 75kg

velocity= 6m/s

distance= 2m

The expression for the applied force is given as

F= mv^2/d

Substitute

F= 75*(6)^2/ 2

F= 75*36/2

F= 2700/2

F= 1350N

Hence the force is 1350N

Answer:

49,000 Pa

49 kPa

Explanation:

P (pressure)= hρg, where h= height, ρ=density, and g= acceleration due to gravity.

50 m * 1000kg/m³ * 9.8 m/s²

=49,000 kg*m⁻¹s⁻² OR 49,000 Pa OR 49 kPa

Answer:

A) amps using an ammeter.....

Answer:

Diagram A will reach the top first.

Explanation:

If it is going straight, it will go slower. The higher the movement speed the faster it is. Hope this helps!

Answer:

the initial kinetic energy of the basket ball is 4.8 J

Explanation:

The computation of the initial kinetic energy of the basket ball is shown below:

As we know that

Initial kinetic energy is

[tex]= \frac{1}{2}mv^2 \\\\= \frac{1}{2}\times 0.6 \times (4m/s)^2\\\\= \frac{1}{2}\times 0.6 \times 16m/s^2\\\\= 4.8 J[/tex]

Hence, the initial kinetic energy of the basket ball is 4.8 J

Answer:

a chicken

a chicken came first

Answer:

A Chicken

A chicken came first

Explanation:

Distance travelled (d) = 56 metres

Time taken (t) = 7 seconds

velocity of the object (V)

= d / t

= 56 / 7

= 8 m/s

The velocity of the object is 8 m/s.

Hope it will help :)

Answer:

1.F = 256 N

2.a = 8 m/s/s

By looking at the given information, you know force, and an acceleration. Therefore you have enough information to use the first formula.

F = ma

256 N = m * 8 m/s/s

m = 256 N/8 m/s/s

m = 32 Kg

Answer:hence, the force needed to accelerate the 1000kg car by 3m/s2 is 3000N

Explanation:

plz mark as brainlyist plz

Answer:

Explanation:

According to this site, "The purpose of these curved wingtips is to prevent high air pressure above the airplane from flowing over and under the wings."

Hope this helps!

Answer:

Given =

Current = 3 A

Resistance = 5 ohm

Solution =

By Ohm's Law

R = V/I

V = R x I

V = 5 x 3

V = 15 volts. Answer

Answer:

The depth of the object below the surface of the liquid is 0.510 meters.

Explanation:

The hydrostatic pressure ([tex]P[/tex]), measured in pascals, experimented by the object is directly proportional to density of the fluid ([tex]\rho[/tex]), measured in kilograms per cubic meter, gravitational acceleration ([tex]g[/tex]), measured in meters per square second, and depth of the object ([tex]h[/tex]), measured in meters. That is:

[tex]P = \rho\cdot g \cdot h[/tex] (1)

If we know that [tex]P = 4500\,Pa[/tex], [tex]\rho = 900\,\frac{kg}{m^{3}}[/tex] and [tex]g = 9.807\,\frac{m}{s^{2}}[/tex], then the depth of the object is:

[tex]h = \frac{P}{\rho\cdot g}[/tex]

[tex]h = \frac{4500\,Pa}{\left(900\,\frac{kg}{m^{3}} \right)\cdot \left(9.807\,\frac{m}{s^{2}} \right)}[/tex]

[tex]h = 0.510\,m[/tex]

The depth of the object below the surface of the liquid is 0.510 meters.

The depth of the object below the liquid's surface will be

"0.510 m".

According to the question,

Object immersed, P = 4500 Pa

Density of liquid, ρ = 900 kg/m³

Acceleration due to gravity, g = 9.8 m/s²

We know the relation,

→ Hydrostatic pressure (P) = ρ.g.h

or,

Depth will be:

→ h = [tex]\frac{P}{\rho .g}[/tex]

By substituting the values,

     = [tex]\frac{4500}{900\times 9.8}[/tex]

     = [tex]\frac{4500}{8820}[/tex]

     = 0.510 m

Thus the above answer is appropriate.  

Find out more information about pressure here:

https://brainly.com/question/1831566

Answer:

Explanation:

HELP ME WRITE A ONE PAGE ESSAY TO EXPLAIN THE AUTHOR'S PURPOSE IN WRITING HOM SMART ARE ANIMAL

Answer:

Upward direction.

The friction is kinetic friction

Answer:Orbits are the result of a perfect balance between the forward motion of a body in space, such as a planet or moon, and the pull of gravity on it from another body in space, such as a large planet or star. An object with a lot of mass goes forward and wants to keep going forward; however, the gravity of another body in space pulls it in.

Explanation:

Answer:

when object is kept at focus then image will form at infinity

Explanation:

virtual erect highly diminished image will be formed and it is used in the lense in galilean telescope

Answer:

The density pf each piece will be the same, since density is defined as a mass per unit volume, so even when you cut an object it will not change

Answer:

The linear momentum of a particle with mass m moving with velocity v is defined as

p = mv (7.1)

Linear momentum is a vector . When giving the linear momentum of a particle you must

specify its magnitude and direction. We can see from the definition that its units must be

kg·m

s

. Oddly enough, this combination of SI units does not have a commonly–used named so

we leave it as kg·m

s

!

The momentum of a particle is related to the net force on that particle in a simple way;

since the mass of a particle remains constant, if we take the time derivative of a particle’s

momentum we find

dp

dt = m

dv

dt = ma = Fnet

so that

Fnet =

dp

dt (7.2)

Answer:

Interact with it

Explanation:

The body in a condensed form (often a dot or a box)

Straight arrows pointing in the direction in which forces act on the body are represented.

Moments are portrayed by curved arrows pointing in the direction in which they impact the body.

A coordinate system is a series of coordinates.