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3 years ago

Based on the table, what would you predict the speed of sound through ice would most likely be?

Physics

1 answer:

MatroZZZ [7]3 years ago

3 0

Answer:

4000m/s

Explanation:

It would be this because sound travels faster through a solid rather than a liquid.

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13. A set of pulleys lifts an 800 N crate 4 meters in 7 seconds. What power was used?

kiruha [24]

Answer:power=457.1watts

Explanation:

8 0

4 years ago

Read 2 more answers

show mathematically why an 80,000 pound ( 36,000 kg ) big rig taveling 2 mph (0.89 m/s) has the SAME MOMENTUM as a 4,000 pound (

bekas [8.4K]

The momentum value for both Big rig and sport utility vehicle are the same as 16000 pound mph

<u>Explanation:</u>

Given data are as follows

For Big rig, Mass = 80,000 pound (36,000 kg)

velocity = 2 mph (0.89 m/s)

where mph is meter per hour

For sport utility vehicle, Mass = 40,000 pound (1800 kg)

velocity = 40 mph (18 m/s)

The formula to find the Momentum of an object is

Momentum = Mass × Velocity (Kilogram meter per second)

Momentum for Big rig = 80,000 × 2 (pound mph)

= 1,60,000 pound mph

Momentum for sport utility vehicle = 4000 × 40 (pound mph)

= 1,60,000 pound mph

Hence it is mathematically proved that

The momentum of big rig = The momentum of sport utility vehicle

1,60,000 pound mph = 1,60,000 pound mph

3 0

4 years ago

A 0.25 kg baseball is in contact with a bat for 0.0075 s and exerts a force of 18,500 N. What impulse is delivered to the ball?

Alecsey [184]

The answer is 138.75 kgm/s

Impulse (I) is the multiplication of force (F) and time interval (Δt): I = F · Δt
It is given:
m = 0.25
F = 18,500 N = 18,500 kgm/s²
Δt = 0.0075 s
I = ?

I = F · Δt = 18,500 5kgm/s² * 0.0075 s = 18,500 * 0.0075 kgm/s² * s = 138.75 kgm/s

3 0

3 years ago

Read 2 more answers

Newton's law of cooling states that the rate of change of temperature of an object in a surrounding medium is proportional to th

Nastasia [14]

Answer:

$T = 40 + e^{3.68t} e^{2.99}$

Explanation:

The differential equation for given is given as

$\frac{dT}{dt} = - k(T-T_s)$

integrating above equation we have

ln(T-T_s) = -kt + C

At t = 0 , T(0) = 60

$ln(60- 40) = -k\times 0 + C$

2.99 = C

At t =1 , T(1) = 40.49887

$ln(40.49787 - 40) = -k\times 1 + 2.99$

- k = -3.687

So we have

$T- 40 = e^{3.68t + 2.99}$

$T = 40 + e^{3.68t} e^{2.99}$

4 0

3 years ago

What pieces of information do you need to accurately describe the motion of an object?

Vlad [161]

An object's location, velocity, acceleration, and direction can all be used to define motion.

Define velocity:

Velocity and speed describe how quickly or slowly an object is moving. We frequently encounter circumstances when we must determine which of two or more moving objects is going faster. If the two are travelling on the same route in the same direction, it is simple to determine which is quicker. It is challenging to identify who is moving the quickest when their motion is in the other direction. The idea of velocity is useful in these circumstances. Learn what velocity is, how it is measured, an example of velocity, and how it differs from speed in this article.

Motion may be described using an object's position, velocity, acceleration, and direction.

To learn more about motion follow the given link:
brainly.com/question/26083484

#SPJ1

5 0

2 years ago