A crate is being pushed at a constant speed across the floor. The gravitational force on the crate is 80N, and the applied force is 50N. What are the other force(s) acting on the crate?

Answer:

v = 10 m/s

Explanation:

We have,

Our initial velocity is 20 m/s

Our acceleration, [tex]a=-5\ m/s^2[/tex]

It is required to find the velocity after 2 seconds. It is a concept based on equation of kinematics. Using first equation:

[tex]v=u+at[/tex]

Plugging all the known values

[tex]v=20+(-5)(2)\\\\v=10\ m/s[/tex]

So, our final velocity is 10 m/s.

Answer:

No. The size of the particles in the substance remains the same when the state of matter changes.

Explanation:

this is the exact answer

Answer:

150N

Explanation:

formula= pressure= force/area

300pa= x/0.5

300*0.5= x

150N= x

force= 150N

Answer:

friction

Explanation:

The property of matter that resists changes in motion is called friction. Details about friction can be found below.

Friction is a force that resists the relative motion of two bodies in contact.

Friction is a resisting force that is experienced when two bodies are moving over one another, hence, is said to resist changes in motion. Examples of cases of friction are as follows:

Therefore, the property of matter that resists changes in motion is called friction.

Learn more about friction at: https://brainly.com/question/13000653

Answer:

Bottle opener works on a fulcrum.

Explanation:

A bottle opener is a second-class lever because the pivot point is at one end of the opener and the load is in the middle.

Answer:

Frequency, f = 15 Hz      

Explanation:

We have,

Speed of an ocean wave is 45 m/s

Wavelength of a wave is 3 m

It is required to find the frequency of an ocean wave.

Speed of a wave, [tex]v=f\lambda[/tex], f = frequency of ocean wave

[tex]f=\dfrac{v}{\lambda}\\\\f=\dfrac{45}{3}\\\\f=15\ Hz[/tex]

So, the frequency of an ocean wave is 15 Hz.

Answer:

Acceleration = 0

Explanation:

Uniform Velocity = 1.5m/s

Acceleration is defined as the change in Velocity of a moving object with time.

Acceleration = (V2 - V1) / t

Where v2 and V1 are velocities and t is time

A body is said to be moving at a uniform Velocity if the Velocity with which it moves is constant. That is there is no change in the Velocity as the body progresses

Mathematically ;

(V2 - V1) = 0 [uniform / constant Velocity]

acceleration = 0 / time

Acceleration = 0

Answer: 10m/s^2

Explanation:

Given the following :

Initial Velocity(U) = 10m/s

Angle of inclination = 30°

In other to calculate the magnitude of the vector,

We need to resolve into verti AL and horizontal component.

Vertical component of a vector(Uy) = U × Sinθ

Horizontal component(Ux) = U × Cosθ

Uy = 10 × sin30 = 10 × 0.5 = 5m/s

Ux = 10 × Cos30 = 10 × 0.866 = 8.66m/s

Therefore the magnitude equals :

U = √(Uy)^2 + (Ux)^2

U = √5^2 + 8.66^2

U = √25 + 74.9956

U = √99.9956

U = 9.9997799

U = 10m/s^2

Answer:

Explanation:

Magnetic field due to current carrying wire at a distance r from the  wire is

[tex]B=\frac{\mu_0I}{2r}---(1)[/tex]

In our case

[tex]I=\frac{I_0}{2}[/tex]

where,

I₀ = max current or peak current

and r = h (where h is the height of power line)

[tex]\therefore B=\frac{\mu (I_0/2)}{2h} \\\\=\frac{\mu_0 I_0}{4h} ----(2)[/tex]

put

h ≈ 370m

I₀ ≈ 3KA

[tex]B= \frac{(1.26*10^-^6)(3*10^3)}{4*(370)} \\\\=2.5*10^-^6 T[/tex]

Answer:

a=1 m/s^2

Explanation:

[tex]a = \frac{v - u}{t} \\ = \frac{10 - 0}{10} \\ = 1m {s}^{ - 2} [/tex]

Hey!!

Solution,

Initial velocity(u)=0 m/s

Final velocity(v)=10m/s

Time(t)=10s

Acceleration=?

Now,

Acceleration=v-u/t

=10-0/10

= 10/10

=1 m/s^2

The acceleration is 1 m/s^2

Hope it helps

Good luck on your assignment

Answer:

The answer is C

Explanation:

I've just answered this question on a quiz

Answer:

Condenser

Explanation:

The refrigerator work on a simple cycle:

1- When the cold air inside the refrigerator starts to get warm, it loses its thermal energy ot the cold refrigerant which is flowing inside an evaporator. This thermal energy converts the refrigerant into a gas.

2- The refrigerant, in a form of gas, goes to the compressor. The compressor compresses it and increases its temperature even more.

3- Then it goes to the condenser where it loses its most of the thermal energy to the condenser coils. When it loses the energy. it comes back to liquid form.

4.The refrigerant flow back to the evaporator

Cycle continuous  

Answer:

-0.375 m/s2

Explanation:

To find the acceleration due to gravity in this planet, we can use the Torricelli formula of UALM (uniformly accelerated linear motion):

V^2 = Vo^2 + 2*a*S

Where V is the final velocity, Vo is the inicial velocity, a is the acceleration and S is the total displacement.

With V = 3, Vo = 0 and S = -12, we have:

3^2 = 0^2 - 2*a*12

24a = -9

a = -9/24 = -0.375 m/s2

The answer is D  (1/5)m/s^2

Answer:

[tex]Ebp=9J[/tex]

Explanation:

Potential energy:

[tex]Ep=mgh[/tex]

m - mass

h - altitude = 20cm = 0.2 m

[tex]Epa=12=0.2(mg)[/tex]

Thus:

[tex]mg=\frac{12}{0.2}[/tex]

[tex]mg=60n[/tex]

In Point B:

[tex]Epb=mg(0.15)[/tex]

[tex]Epb=60(0.15)[/tex]

[tex]Epb=9J[/tex]

Answer:

it's Louis pastuer

Explanation:

...

Answer:

Rutherford and atomic model are correctly matched.

Answer:

Schrödinger - electron cloud surrounds nucleus. Hope this helps.Explanation:

I was confused with the question so, the following are the two answers. You can take whichever u want to. :)

Explanation:

If the qn is Rearrange to make it right, then the answer is: The 6 million degrees energy is stored in the sun.

Or if the question is Correct the sentence, then the answer will be: The energy stored in the sun is solar energy.

Answer:

3.4 s is the correct answer to the given question .

Explanation:

As Given in the question

Vox=310 m/s

Voy=26 m/s.

As we know that

[tex]v_{y} ^{2}= v_{ay} ^{2}\ +2gh[/tex]--------------eq(1)

As the velocity at the maximum height =0

Putting the value of [tex]v_{y} ^{2} \ = \ 0[/tex] in the equation(1) we get

[tex]v_{ay} ^{2}\ +\ 2gh\ = 0\\ h=\frac{ -v_{ay} ^{2}}{2g}[/tex]

Putting the value [tex]v_{ay} ^{2}\[/tex] in the previous equation we get

[tex]\frac{\ (-26 m/s\ )^{2} }{\ (2*\ -9.8\ )}\\ =\frac{676}{19.6}\\ =34.4\ m/s\\=3.4 s[/tex]

Therefore h=3.4 s

Answer:

I know 1, that is in the case of a burning of a candle.

Explanation:

Answer:

On the other hand, Florida's Gulf Coast experiences the greatest number of thunderstorms out of any U.S. location. These types of storms occur on average 130 days per year in Florida.

Explanation:

It is given that, a robot starts from a certain point and moves east for a distance of 5.0 meters, then goes north for 3.0 meters, and then turns west for 2.0 meters.

Let east is +x, west is -x north is +y.

When it moves east for a distance of 5.0 meters, it means (5,0)

When it goes north for 3.0 meters, and then turns west for 2.0 meters, it means (0,3) +(-2,0)

(a) x-y coordinates for the resultant vector is (3,3)

(b) The magnitude of the resultant vector for the robot is given by :

[tex]R=\sqrt{3^2+3^2} \\\\R=4.24\ m[/tex]

Answer:

are in equal size or act in same direction

Balanced forces are the forces which are equal in size. Balanced force has a net force which is equal to zero, and these do not cause a change in motion. Thus, the correct option is C.

Balanced forces are those which are opposite in direction and equal in the size. Balanced forces are considered to be in the state of equilibrium. When the forces are balanced and there is no change in direction. Combined forces which are balanced are always equal to zero. These forces are equal and hence do not cause any change in the motion of an object.

Examples of balanced forces include resting against a wall, lying down, aircraft in a steady-flight, floating in water, and standing in the ground.

Therefore, the correct option is C.

Learn more about Balanced forces here:

https://brainly.com/question/29769471

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Answer:

Explanation:

Question 1:

Given;

a counterweight of mass, m = 2-kg

distance moved by this weight, d = 0.5 meters

the gravitational force of the counterweight is calculated as;

F = mg

where;

F is gravitational force

m is the mass

g is acceleration due to gravity

F = 2 x 9.8 = 19.6 N

Thus, the gravitational force of the counterweight is 19.6 N

Question 2:

Given;

a counterweight of mass, m = 2-kg

height moved by this weight, h = 0.5 meters

the work done is calculated as;

Work done = Force x distance moved by this weight

Work done = 19.6 x 0.5 = 9.8 J

Thus, the work done is 9.8 J

Answer:

41 miles

Explanation:

Also, the straight line distance from your starting point is technically called your displacement.

Answer:

It is a superordinate goal because both teams could have helped with the task.

Explanation:

If both teams pushed then they could have made it happened

Answer:Answer:

They are inhaled or eaten

Explanation:

Radioactivity can be defined as the process in which an unstable atomic nucleus spontaneously emits ionizing radiation and charge particles. This eventually results in the formation of an energetically stable atomic nucleus.

Examples of radioactive elements are Uranium, Polonium, Thorium, Radon, etc. The radiation emitted during this process is classified as;

1. Alpha radiation (α).

2. Beta radiation (β).

3. Gamma radiation (G).

Alpha-emitting substances, such as radon gas, can be a serious health hazard only if they are inhaled or eaten. Alpha-emitting substances compared to other radiation has very short-range particle and as such cannot penetrate the human skin or body.

Answer:

v_avg = 4 m/s

Explanation:

The average velocity of the car is given by the distance traveled by the car, in a specific time.

The total distance is 20m, because the car moved to the reference point (10m), and then moves to 10m to the south. THe total distance is 20m.

Then, you use the following formula:

[tex]v_{avg}=\frac{x_t}{t}[/tex]

x_t: total distance traveled by the car =  20m

t: time in which the car made the trajectory =  5s

You replace the values of x_t and t:

[tex]v_{avg}=\frac{20m}{5s}=4\frac{m}{s}[/tex]

hence, the average velocity is 4m/s

Answer:

where is your option ?

you can't write option so I think

sodium chloride is not sublimable

Answer:

it is a mass of an object that increases to a kinetic energy.

Explanation:

Answer:

[tex]k=0J[/tex]

Explanation:

Kinetic Energy formula:

[tex]K=\frac{1}{2} (m)(v^2)[/tex]

The rocks suspended 320 m above ground. The rock is not in motion. The speed of the rock is zero.

Using the formula:

[tex]K=\frac{1}{2} (m)(0^2)[/tex]

[tex]K=0J[/tex]