All categories

3 years ago

ANSWER ASAP - Define, describe and solve for speed, velocity, and acceleration

Physics

1 answer:

Vitek1552 [10]3 years ago

4 0

Answer:

Accelrtation:a vehicle's capacity to gain speed within a short time.EX:An object was moving north at 10 meters per second.

Velociy:the speed of something in a given direction EX:Velocity is the rate of motion, speed or action. An example of velocity is a car driving at 75 miles per hour.

Explanation:

You might be interested in

The Environmental Protection Agency has ben concerned about the levels of radon gas in homes. If a sample of gas taken from a ba

soldier1979 [14.2K]

Answer is 2.19 g of radon will remain in the sample after 4 half-lives

6 0

3 years ago

What is the strength of the electric field in a region where the electric potential is constant?

Roman55 [17]

Answer:

Where the electric potential is constant, the strength of the electric field is zero.

Explanation:

As a test charge moves in a given direction, the rate of change of the electric potential of the charge gives the potential gradient whose negative value is the same as the value of the electric field. In other words, the negative of the slope or gradient of electric potential (V) in a direction, say x, gives the electric field (Eₓ) in that direction. i.e

Eₓ = - dV / dx ----------(i)

From equation (i) above, if electric potential (V) is constant, then the differential (which is the electric field) gives zero.

Therefore, a constant electric potential means that electric field is zero.

4 0

3 years ago

An electrical motor spins at a constant 2695.0 rpm. If the armature radius is 7.165 cm, what is the acceleration of the edge of

djyliett [7]

Answer:

Acceleration will be $5706.77rad/sec^2$

So option (D) will be correct answer

Explanation:

We have given angular speed of the electrical motor $\omega =2695rpm$

We have to change this angular speed in rad/sec for further calculation

So $\omega =2695rpm=2695\times \frac{2\pi }{60}=282.2197rad/sec$

Armature radius is given r = 7.165 cm = 0.07165 m

We have to find the acceleration of edge of motor

Acceleration is given by $a=\omega ^2r=282.2197^2\times 0.07165=5706.77rad/sec^2$

So acceleration will be $5706.77rad/sec^2$

So option (D) will be correct answer

5 0

4 years ago

when an object is charged by contact, what kind of charge does the object have compared with the charge on the on the object giv

sveta [45]

Answer:

the charge that is given by the object is positive charge and the object which is taking the charge is negetively charged

Explanation:

5 0

3 years ago

Each of 100 identical blocks siting on a frictionless surface is connected to the next bloc by a massless string. The first bloc

Anit [1.1K]

Answer:

A) 1 N

B) 50 N

Explanation:

Let us consider that the string does not deform.

To solve this problem lets consider the whole system as two parts. In the initial case, the first part will be de 100N being exterted to the whole system and in the second the 100 blocks system.

In this case we can imagine as the whole system being pulled by 100 N, and therefore its acceleration will be:

a = 100 N /(100 m)

where m stantds for the mass of one block

Now, the whole system and its individual parts must move with the same acceleration otherwise the string would stretch.

Now lets consider the first part of the system as the first block, and the second part as the other 99 blocks.

The Tension of the string pulling the 99 blocks must be so that it exterts the enough force to move that 99blocks-system at an acceleration a, since that sub-system has a mass of 99m

T1 = 99 m * a = (99 m) * (100 N/ 100 m) = 99 N

Now lets consider an intermidiate sub-system, where the first part is made of n blocks and the second susbsystem is made of (100 -n) blocks

Following the same logic, the tension of the corresponding string must be the acceleration of the whole systems times the mass of the second subsystem:

Tn = (100 -n)m * ( 100 N / 100 m ) = (100 -n) N

Therefore the tension in the string connecting block 100 to block 99 must be

T99 = 1 N

And

T50 = 50 N

6 0

3 years ago