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Oxana [17]
2 years ago
14

Before you leave for a trip, you should check

Physics
1 answer:
Evgen [1.6K]2 years ago
4 0
-- make sure you have enough money;

-- make sure you arranged for someone to feed the dog and the goldfish;

-- make sure you turned off the faucets and the stove burners.
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A 4-kg hammer is lifted to a height of 10 m and dropped from rest. What was the velocity (in m/s) of the hammer when it was at a
ipn [44]

Answer:

v = 10.84 m/s

Explanation:

using the equation of motion:

v^2 = (v0)^2 + 2×a(r - r0)

<em>due to the hammer starting from rest, vo = 0 m/s and a = g , g is the gravitational acceleration.</em>

v^2 = 2×g(r - r0)

v = \sqrt{2×(-9.8)×(4 - 10)}

  = 10.84 m/s

therefore, the velocity at r = 4 meters is 10.84 m/s

4 0
2 years ago
An electron has a constant acceleration of +3.3 m/s2. at a certain instant its velocity is +8.6 m/s. what is its velocity (a) 2.
Citrus2011 [14]
Hello!


The velocity function is:

\mathsf{V = V_0 + at}\\ \\ \mathsf{V = 8.6 +3.3t}


a) 2.3 s earlier, we can make t = -2.3 s, in relation to our initial time:

\mathsf{V = 8.6 + 3.3\cdot(-2.3)}\\ \\ \mathsf{V = 8.8-7.59}\\ \\ \boxed{\mathsf{V = 1.21 \ m/s}}

b) Now we can make t = 2.3 s:

\mathsf{V = 8.6 + 3.3\cdot2.3}\\ \\ \mathsf{V = 8.6 + 7.59}\\ \\ \boxed{\mathsf{V = 15.59 \ m/s}}
7 0
3 years ago
A material's ability to allow heat or electricity to flow through it...
NikAS [45]

Answer:

a

Explanation:

how well a material shines or reflects light

8 0
3 years ago
please help me with my question I will like and mark as brainliest for the first correct answer due tomorrow morning​
bazaltina [42]

Answer:

1845.26 ?

Explanation:

18.46 × 99.96= 1845.2616 = 1845.26

im not entirely sure though

6 0
3 years ago
A material the resists the flow of electrons is called a
svp [43]
An insulator which is also called a 'dielectric'.
8 0
3 years ago
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