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3 years ago

14

Henry was given this cool toy for his birthday, he can use it to tell how fast someone is moving at that moment in time. The toy

must calculate the person's

1 answer:

Jobisdone [24]3 years ago

6 0

Speed, the toy can calculate a persons speed

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What is the acceleration of an object with mass of 42.6 kg when an unbalanced force of 112 N is applied to it

lord [1]

The answer is 2.63m/s^2! You use the formula F=ma, 112 = 42.6(a), a= 2.63m/s^2.

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3 years ago

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Interactive Solution 28.5 illustrates one way to model this problem. A 7.11-kg object oscillates back and forth at the end of a

____ [38]

Explanation:

Given that,

Mass of the object, m = 7.11 kg

Spring constant of the spring, k = 61.6 N/m

Speed of the observer, $v=2.79\times 10^8\ m/s$

We need to find the time period of oscillation observed by the observed. The time period of oscillation is given by :

$t_o=2\pi \sqrt{\dfrac{m}{k}} \\\\t_o=2\pi \sqrt{\dfrac{7.11}{61.6}} \\\\t_o=2.13\ s$

Time period of oscillation measured by the observer is :

$t=\dfrac{t_o}{\sqrt{1-\dfrac{v^2}{c^2}} }\\\\t=\dfrac{2.13}{\sqrt{1-\dfrac{(2.79\times 10^8)^2}{(3\times 10^8)^2}} }\\\\t=5.79\ s$

So, the time period of oscillation measured by the observer is 5.79 seconds.

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3 years ago

The particle in the atom with a negative charge is the ______<br> Answer here

NISA [10]

Answer:

Explanation:

The electron has a negative charge. Proton is positive and neutron is neutral.

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Why does diamond sparkles stars twinkles?

Helga [31]

Answer:

Because they want attention

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3 years ago

Two substances, M and N, have specific heats c and 2c. if heats Q and 4Q are supɔlied to Mand N, respectively, their changes in

Ierofanga [76]

Answer:

If the mass of B is m and the temperature change is the same, the mass of B will be 2m.

Explanation:

Q = mcT

T = mc/Q

M = 4Q/2cT........... (1)

T = Q/mc

Plug this in equation 1.

M = 4Q/(2c × Q/mc) = 4Q ÷ 2Q/m = 4Q × m/2Q = 2m

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3 years ago