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Basile [38]
4 years ago
13

An ice cube melts when its mechanical energy increases.

Physics
2 answers:
Scorpion4ik [409]4 years ago
8 0

Answer:

False!

Explanation:

Sergeu [11.5K]4 years ago
7 0
False it only melts when its thermal energy increases. plus an ice cube has no mechanical energy.
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How to determine my slope in physics graph​
Hatshy [7]

Answer:

Determine the coordinates of two points on the line. Calculate the difference between these two locations' y-coordinates (rise). Calculate the x-coordinate difference between these two places (run). Divide the y-coordinate difference by the x-coordinate difference (rise/run or slope).

5 0
2 years ago
Bats use sound to sense objects by sending out short ultrasound pulses and listening for the echo off the object. A. Sketch the
ivann1987 [24]

Answer:

B. t = 0.250s

Explanation:

A. An image with the sketch of the bat emitting a sound, which reflects on a surface and return to the bat is attached below.

B. In order to calculate the time that the pulse emitted by the bat, return to the bat, you first calculate the time that pulse takes to arrive to the object.

You use the following formula:

x=vt      (1)

x: distance to the object = 43m

t: time = ?

v: speed of sound beat = 343 m/s  

You solve the equation (1) for t:

t=\frac{x}{v}=\frac{43m}{343m/s}=0.125s

The time on which the bat hears the echo is twice the value of t, that is:

t'=2(0.125s)=0.250s

The time on which bat heart the echo of its sound, from the moment on which bat emitted it, is 0.250s

6 0
3 years ago
a car is traveling at 50 mi/h when the brakes are fully applied, producing a constant deceleration of 24 ft/s2. what is the dist
Maslowich

One of the key areas of science is the study of acceleration and deceleration. Any object's rate of changing velocity is referred to as its acceleration, and a negative acceleration value is referred to as deceleration.

Using beginning velocity of 50 miles per hour,

It's going to

Final speed: 73.33 ft/s, v = 0, and a2: -22 ft/s2.

Utilize the formula: v2 = v0 + 2as

n 0 = 5377.29 + (-44) s

s =5377.29/44 = 122.21 ft

v2 = u2 + 2as is the third equation of motion. We are already aware that distance is equal to average velocity times time. Either v2 = u2 + 2as or 2as = v2 - u2. The third equation of motion connects the particle's final velocity (v), initial velocity (u), constant speed (a), and displacement (S).

Speed is defined as the ratio of distance travelled to the amount of time required to cover that distance.

To know more about motion, click on the link below:

brainly.com/question/14812762

#SPJ4

4 0
1 year ago
Where is energy being applied to the system?
Aleksandr-060686 [28]
Well i cant answer the first question due to absence of diagram
For the second queation, the energy affects the Frequency of wave, the higher the ebrgy the higher the frequency. Since frequency =1/Period,energy can also be said to alter the period. Since wave speed = Frequency *Wavelength, the speed is also increase due to increase in the frequency.
its amplitude increases too by the way.
3 0
4 years ago
Two objects collide. Object A has a momentum of 49 kg.m/s, and Object B has a momentum of
Natalka [10]

Answer:

O 47 kg. m/s if they were initially headed opposite direction

O 145 kg. m/s if they were initially headed the same direction

The other two are possibilities as well if velocities are initially at an angle

Explanation:

5 0
3 years ago
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