All categories

3 years ago

(((((((FILL BLANKS)))))

Physics

2 answers:

KengaRu [80]3 years ago

8 0

Explanation :

It is given that,

The dog is pulling with a force of 32 N to the right and Simone is pulling backward with a force of 16 N.

(1) Since these two forces are in opposite direction. So, net force will be :

F = 32 N - 16 N

F = 16 N

So, the net force is 32 N.

(2) This force is unbalanced. Unbalanced force means that the net force acting on an object is not equal to zero. In this case, there is a net force in a particular direction and as a result, the dog will move.

(3) The dog will move in the forward direction because net force is in forward direction. Also, a force of 32 N is acting this side.

Hence, this is the required solution.

Mazyrski [523]3 years ago

5 0

The net force is 16 in which it is an unbalanced force and the dog will move forward

You might be interested in

What a medium-mass star becomes at the end of its life?

Reika [66]

Answer:

What a medium-mass star becomes after a planetary nebula; a very bright, dense mass about the size of the planet Earth. ... The process that generates all of the energy that a star produces. Supernova. A Red Super Giant explodes into this when it runs out of elements to fuse together.

Explanation:

7 0

3 years ago

10-kg box is sliding across an ice rink at 10 m/s . A skater exerts a constant force of 10 N against it. How long will it take f

Taya2010 [7]

Answer:

Time, t = 10 seconds

Explanation:

Given the following data;

Mass = 10kg

Force = 10N

Final velocity = 10m/s

Initial velocity = 0m/s

To find the time;

First of all, we would find the acceleration of the box.

Force = mass * acceleration

10 = 10 * acceleration

Acceleration = 10/10 = 1m/s²

Now, we can find the time by using the first equation of motion;

V = U + at

10 = 0 + 1t

10 = t

Time, t = 10 seconds

Therefore, it will take 10 seconds for the box to come to a complete stop.

7 0

3 years ago

Mechanical waves use matter to transfer energy. Please select the best answer from the choices provided T F

Semenov [28]

I believe the correct answer is true. Mechanical waves use matter to transfer energy. It is a wave that is an oscillation of matter, and therefore transfers energy through a medium. Hope this answers the question. Have a nice day.

8 0

4 years ago

A satellite is launched to orbit the Earth at an altitude of 2.90 x10^7 m for use in the Global Positioning System (GPS). Take t

marin [14]

Answer:

$T=66262.4s$

Explanation:

From the question we are told that:

Altitude $A=2.90 *10^7$

Mass $m=5.97 * 10^{24} kg$

Radius $r=6.38 *10^6 m.$

Generally the equation for Satellite Speed is mathematically given by

$V=(\frac{GM}{d} )^{0.5}$

$V=(\frac{6.67*10^{-11}*5.97 * 10^{24}}{6.38 *10^6+2.90 *10^7} )^{0.5}$

$V=3354.83m/s$

Therefore

Period T is Given as

$T=\frac{2 \pi *a}{V}$

$T=\frac{2 \pi *(6.38 *10^6+2.90 *10^7}{3354.83}$

$T=66262.4s$

4 0

3 years ago

Shelley is in an elevator that is traveling downward and slowing down at a rate of

liraira [26]

Answer:

N = 648.55[N]

Explanation:

To solve this problem we must use Newton's second law which tells us that the sum of forces on a body is equal to the product of mass by acceleration.

∑F = m*a

where:

∑F = Forces applied [N]

m = mass = 73.2 [kg]

a = acceleration = 0.950 [m/s²]

Let's assume the direction of the upward forces as positive, just as if the movement of the box is upward the acceleration will be positive.

By performing a summation of forces on the vertical axis we obtain all the required forces and other magnitudes to be determined.

$-m*g + N = -m*a\\$

where:

g = gravity acceleration = 9.81 [m/s²]

N = normal force (or weight) measured by the scale = 83.4 [N]

Now replacing:

$-(73.2*9.81)+N=-73.2*0.950\\-718.092+N=-69.54\\N = -69.54+718.092\\N = 648.55[N]$

The acceleration has a negative sign, this means that the elevator is descending at that very moment.

8 0

3 years ago