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2 years ago

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If the child has a mass of 13.9 kg, calculate the magnitude of the force in newtons the mother exerts on the child under the fol

lowing conditions. (b) The elevator accelerates upward at 0.898 m/s2. 148.702 N

1 answer:

bagirrra123 [75]2 years ago

4 0

Answer:

hi how are you doing today Jasmine

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Can you answer this please i’ve been stuck on it for a while

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The kinetic energy depends on several things like how cute I am

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3 years ago

In what ways can a nucleus change during a nuclear reaction??

garri49 [273]

<h2><u><em>Nuclear reactions are processes in which the nucleus of an atom is changed.</em></u></h2>

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2 years ago

A 100.0 gram sample of Polonium-210 is contained for 552 days. How many half-lives occur during this period of time, if the half

Leto [7]

Answer:

4 half-lives will occur during this period of time.

Explanation:

Formula used :

$a_o=a\times e^{-\lambda t}$

$\lambda =\frac{0.693}{t_{1/2}}$

$a=\frac{a_o}{2^n}$

where,

a = amount of reactant left after n-half lives and time t

$a_o$ = Initial amount of the reactant.

$\lambda =$ decay constant

$t_{1\2}$ = half life of an isotope

n = number of half lives

We have :

$a_o=100.0 g$

a = ?

t = 552 days

$t_{1/2}=138 days$

$a=100.0 g\times e^{-\frac{0.693}{138}\times 552}$

$a=6.254 g$

$6.254 g=\frac{100.0 g}{2^n}$

$2^n=\frac{100.0 g}{6.254 g}$

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4 half-lives will occur during this period of time.

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3 years ago

Adam and Natalie push on a cart using 150 N of force.The cart does not move.What is static friction on the cart?

Roman55 [17]

When force is applied on an object the object will not slide

So here object will remain in equilibrium after applying the force

So in this case the condition of equilibrium is maintained due to friction force that is applied on the object.

So here for equilibrium be can say

$F_{net} = 0$

also we know that

$F_{net} = F - F_f$

we are given that

$F = 150 N$ ( applied force on the box)

$F_{net} = 150 - F_f = 0$

$F_f = 150 N$

So here this friction force on the cart is known as static friction

$F_s = 150 N$

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3 years ago

Read 2 more answers

Which type of graph most clearly show how a part or percentage relate to the whole

Bezzdna [24]

Circle graph is the type of graph which most clearly shows the part or percentage related to the whole.

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Graphs are the easiest tool to show the change in a given dependent variable with respect to independent variable. The influence or the effects will be seen in the graphs.

There are different kinds of graph like circle graph, bar graph, line graph. Each of these have their own method of showing the change in the dependent variable. Among them, circle graph is the one which will help to show the percentage of each variable related to the whole.

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3 years ago