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Natalija [7]
4 years ago
11

Why do you want the water to drip off the metal before it is placed in the calorimeter?

Physics
1 answer:
VMariaS [17]4 years ago
8 0

Answer:

(A) The mass and the initial temperature of the calorimeter water will be incorrect and affect the calculation of the specific heat capacity of the metal.

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21 kg brick v=6.1 m/s sticks to a 2.9 kg cart v=.26 m/s
vovikov84 [41]

Answer:

v = 6.05 m/s

Explanation:

The mass of the brick, M = 21 kg

The velocity of the brick, U = 6.1 m/s

The mass of the cart, m = 2.9 kg

The velocity of the cart, u = 0.26 m/s

The combined mass of the brick and the cart, v = ?

According to the law of conservation of linear momentum,

         Combined final momentum = sum of the initial momentum

                         (M + m)v = MU + mu

                                      v = MU + mu / M + m

                                         = 21 x 6.1 + 2.1 x 0.26 / (21 + 0.26)

                                         = 6.05 m/s

Hence, the combined velocity of the cart and the brick is, v = 6.05 m/s

5 0
3 years ago
Objects want to keep doing the same thing is a way of stating ....
galben [10]

Answer:

Objects want to keep doing the same thing is a way of stating Newtons First Law.

3 0
4 years ago
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True or false the potential energy of a freely object increases as it begins to fall
Eva8 [605]
False, as an object falls its potential energy turns into kinetic energy thus decreasing the potential energy.
3 0
3 years ago
Sully uses a battery and a coil of wire to create an electromagnet. Using the same materials, if he wants to increase the streng
garik1379 [7]
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The strength of magnetic field of such magnet is given with this equation:
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Where N is the number of loops in the coil, I is the strength of the current flowing through the coil, L is the length of the coil, and \mu is <span>permeability of the electromagnet core material.
From this equation, we can see that increasing both the current and number of loops will increase the strength of the magnet.
Both BLANKS should be Increase. When you use the additional battery you will have more voltage and more voltage means more electricity.</span>
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3 years ago
You discover a binary star system in which one member is a 15 solar mass main-sequence star and the other star is a 10 solar mas
Sever21 [200]

Answer:

A star with 15 solar masses is too big to be a main-sequence star.

4 0
4 years ago
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