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3 years ago

Which motion maps show an object in uniform circular motion? Check all that apply. V W X Y

Physics

2 answers:

marta [7]3 years ago

8 0

Answer:

V,W,Y

Explanation:

SpyIntel [72]3 years ago

6 0

Explanation:

In this case we need to say that out of the attached figure which shows that the object is in uniform circular motion.

When and object moves in a circular path, its motion is called circular motion. In this type of motion, the speed of the object remains constant while its position changes i.e. its velocity changes.

Out of attached options, V shows circular motion, as the object is position continuously. W and Y are similar cases.

So, V, X and Y shows the circular motion of the object. Hence, this is the required solution.

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A twin-sized air mattress used for camping has dimensions of 100 cm by 194 cm by 14 cm when blown up. The weight of the mattress

Paul [167]

Answer:

$2625.156\ \text{N}$

Explanation:

Dimensions of mattress 100 cm by 194 cm by 14 cm

$m_m$ = Mass of mattress = 4 kg

$\rho$ = Density of water = $1000\ \text{kg/m}^3$

g = Acceleration due to gravity = $9.81\ \text{m/s}^2$

Volume of mattress

$V=100\times 194\times 14=271600\ \text{cm}^3=0.2716\ \text{m}^3$

Weight of water displaced is equal to the buoyant force

Mass of water

$m=\rho V\\\Rightarrow m=1000\times 0.2716\\\Rightarrow m=271.6\ \text{kg}$

Mass of person would be

$m_p=m-m_m=271.6-4\\\Rightarrow m_p=267.6\ \text{kg}$

Weight of the person would be

$w=m_pg\\\Rightarrow w=267.6\times 9.81\\\Rightarrow w=2625.156\ \text{N}$

The air mattress could hold a person that weighs up to $2625.156\ \text{N}$ .

8 0

2 years ago

How far can a bullet at 450 m/s travel for 4.7 s?

marta [7]

The bullet can travel about distance of (2115 m)

Velocity can be regarded as the ratio of distance to time

Velocity= (distance / time)

Given: velocity= 450 m/s

Time= 4.7s

Distance= ( velocity × time)

<em>If we substitute the values</em>

Distance = ( 450 × 4.7)

= 2115 m

Therefore, the bullet can travel about 2115 m

Learn more at : brainly.com/question/13639113?referrer=searchResults

5 0

3 years ago

A pendulum bob is made of a ball filled with water. What would happen to the frequency of vibration of this pendulum if a hole i

dlinn [17]

Answer:

Frequency will not change.

Explanation:

As you know, Time period 'T' = 2π x √(L/g)

where,

L= the length of the pendulum

g= acceleration due to gravity

and Frequency 'f' is the reciprocal of period.f=1/T

From above, we can conclude that frequency is not dependent on mass.

It depends upon the acceleration due to gravity 'g' and the length of the pendulum 'L'

So, if a hole in the ball allowed water to slowly leak out, frequency would not change

3 0

3 years ago

Which statement about momentum is false? a. Momentum is a force b. Momentum may be transferred c. Momentum is always conserved d

Sidana [21]

Answer:

So, option(a).

Explanation:

Momentum is the measure of motion of the object.

Momentum is given by the product of mass and the velocity of the object.

(a) It is false.

(b) It is true, momentum is transferred.

(d) It is true, as the momentum is associated with the velocity of the object.

6 0

3 years ago

Consult Concept Simulation 6.1 in preparation for this problem. A golf club strikes a 0.039-kg golf ball in order to launch it f

natima [27]

Answer:

72.15723 m/s

Explanation:

F = Force = 7810

s = Displacement = 0.013 m

m = Mass of club = 0.039

v = Velocity

Here work done will be the change in kinetic energy

$Fs=\dfrac{1}{2}mv^2\\\Rightarrow v=\sqrt{\dfrac{2Fs}{m}}\\\Rightarrow v=\sqrt{\dfrac{2\times 7810\times 0.013}{0.039}}\\\Rightarrow v=72.15723\ m/s$

The speed at which the ball leaves the club is 72.15723 m/s

6 0

3 years ago