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Margaret [11]
3 years ago
9

boiling water transfers energy to an ice cube. this is an example of temperature heat heat capacity thermal energy

Physics
1 answer:
Lyrx [107]3 years ago
6 0
Thermal energy is the answer I think.
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A cat falls from a table of height 1.3 m. What is the impact speed of the cat? ( i want the answer NOT THE FORMULA)
telo118 [61]
The impact speed will be
v^2 = 2*9.8*1.3
v^2 = 25.48
v= 5.04 m/s
4 0
3 years ago
Read 2 more answers
A projectile is fired at an upward angle of 45.0º from the top of a 265-m cliff with a speed of .sm 185 What will be its speed w
nignag [31]

The final velocity of the projectile when it strikes the ground below is 198.51 m/s.

<h3>Time of motion of the projectile</h3>

The time taken for the projectile to fall to the ground is calculated as follows;

h = vt + ¹/₂gt²

where;

  • h is height of the cliff
  • v is velocity
  • t is time of motion

265 = (185 x sin45)t + (0.5)(9.8)t²

265 = 130.8t + 4.9t²

4.9t² + 130.8t - 265 = 0

solve the quadratic equation using formula method,

t = 1.89 s

<h3>Final velocity of the projectile</h3>

vyf = vyi + gt

where;

  • vyf is the final vertical velocity
  • vyi is initial vertical velocity

vyf = (185 x sin45) + (9.8 x 1.89)

vyf = 149.322 m/s

vxf = vxi

where;

  • vxf is the final horizontal velocity
  • vxi is the initial horizontal velocity

vxf = 185 x cos(45)

vxf = 130.8 m/s

vf = √(vyf² + vxf²)

where;

  • vf is the speed of the projectile when it strikes the ground below

vf = √(149.322²  +  130.8²)

vf = 198.51 m/s

Learn more about final velocity here: brainly.com/question/6504879

#SPJ1  

3 0
2 years ago
Why would it be cooler if you climb to a higher elevation in a desert
Arturiano [62]
Because cool air rises and warm air falls, so if you wanted the cooler air, you would need to go to higher elevation 
3 0
3 years ago
Read 2 more answers
44. ( John weighs 80 kg, and eats a 1,000 J candy bar. If his
Darina [25.2K]

John can run with the velocity of 5 m/s

Explanation:

  • Kinetic energy is defined as the energy is being used to do an activity, basically energy associated with the motion of objects in the universe.
  • The formula used to find the kinetic energy of an object is k = \frac{1}{2} mv^{2} where as k represented as kinetic energy, m is the mass of the object and v is the velocity of the given object.
  • Here, to find the answer we have to re-write the equation as v = \sqrt[2]{\frac{2 k}{m} }
  • Given, the mass of the object, here it is John = 80 kg, energy needs to be converted to kinetic energy, k = 1000  J.
  • Hence, substitute all the values, then you would velocity as 5 m/s

4 0
3 years ago
Define measurements.​
Reptile [31]

Answer:

act or process of measuring

Explanation:

6 0
3 years ago
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