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STALIN [3.7K]
3 years ago
5

The mass of a cube of iron is 250. g. iron has a density of 7.87 g/cm3. what is the mass of a cube of lead that has the same dim

ensions?
Physics
1 answer:
Step2247 [10]3 years ago
7 0
<span>density of lead = 11.34 g/cm^3 </span>
<span>mass = density x volume = 11.34 g/cm^3 x 45.3 = 513.7 g is the mass of a cube of lead</span>
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An object starts at 11 m/s with an acceleration of 12 m/s? What is its velocity after 4.5 seconds?
marshall27 [118]

Answer:

65 m/s

Explanation:

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5 0
2 years ago
if an object is thrown straight up with an initial velocity of 8m/s and takes 3 seconds to strike the ground, from what height w
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s = 24+45

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2 years ago
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3 years ago
What is velocity? why is it important?​
Setler [38]

Answer:

<em>Velocity is the rate at which the position changes</em>

<em>Velocity is the rate at which the position changesWhy do we need</em>

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Explanation:

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5 0
2 years ago
Read 2 more answers
On the way to school, the bus speeds up from 20 m/s to 36 m/s in 4 seconds. What distance
Tresset [83]
Answer B. 112 m



Step-by-Step Explanation

initial velocity u = 20 m /s
final velocity v = 36 m /s
time taken t = 4 s
acceleration = (v - U) / t
= (36 - 20) / 4
a=4m/s2
from the formula
7-u2=2as , sis distance covered
putting the values
362-202=2×4×s
1296 - 400 = 8 x S
S= 112 m
4 0
2 years ago
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