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3 years ago

Uranium-235, uranium-238, and uranium-239 are different ___________ of uranium.

Physics

1 answer:

ANTONII [103]3 years ago

5 0

Answer:

Isotopes

Explanation:

Atoms of the same element always have the same number of protons. But, Atoms of the same element can have a different number of neutrons.<em> We call these isotopes.</em> These 3 examples of uranium have the same amount of protons within them but a different number of neutrons, hence the change in atomic mass.

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A force platform is a tool used to analyze the performance of athletes measuring the vertical force that the athlete exerts on t

Phoenix [80]

Answer:

a. $I=981.34 N*s$

b. $v_f=3.96 m/s$

c. $v_{f1}=3.63m/s$

d. $y_f=0.673m$

Explanation:

Given: $m=67kg$ , $h=0.720m$ , $0$

$I=\int\limits^{t_1}_{t_2} {F(t)} \, dt$

$F(t)=9200*t-11500t^2$

$I=\int\limits^{0.8s}_{0s}{9200*t-11500*t^2} \, dt$

$I=4600*t^2-3833.3*t^3|(0.80,0)$

$I=2944-1962.66=981.35$

$I=981.34 N*s$

$v_f^2=v_i^2+a*y'$

Starting from the rest

$v_f^2=0+2*9.8m/s^2*0.80s$

$v_f^2=15.68$

$v_f=\sqrt{15.68m^2/s^2}=3.96 m/s$

$I_{total}=p_f$

$I_1-m*g*d=m*v_{f1}-m*v_f$

$981.34-67kg*9.8m/s^2*0.720=67.0kg*v_{f1}-67.0kg*(-3.96m/s)$

Solve to vf

$v_{f1}=3.63m/s$

$v_f^2=v_i^2+2*a*y_f'$

$y_f'=v_i/2*a =(3.63m/s)^2/2*9.8m/s^2$

$y_f=0.673m$

7 0

3 years ago

If little herbert does something uncon<br> sciously he will probably

snow_tiger [21]

If little herbert does something unconsciously he will probably, he's definitely very unware of he has done

Doing something unconscious may have some implications which may not be favourable.

<h3>What is unconscious?</h3>

Unconscious simply means a state of someone being absent minded of what is happening to him or her at a particular period of time

So therefore, if little herbert does something unconsciously he will probably, he's definitely very unware of he has done

Complete question:

What happens if little herbert does something unconsciously he will probably

Learn more about unconscious:

brainly.com/question/11747612

#SPJ1

5 0

2 years ago

Can someone help me please? I’m so confused

Svetradugi [14.3K]

Answer:

what do you need help with? Like which type of print each image is?

Explanation:

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3 years ago

A glass rod rubbed with a tissue paper would strip away electrons from the atoms in glass rod. This would acquire positive charg

Gemiola [76]

Answer:

when this charged glass rod is brought towards the metal ball it will acquire a charge opposite to that of charge body brought close to it without touching it but it will acquire the same charge if the charged object touches it

7 0

3 years ago

the density of maple wood is about 755.kg/m. What is the mass of a solid piece of maple that has a volume 640.cm?

jenyasd209 [6]

I believe that the correct given values are:

density = 755 kg/m^3

volume = 640 cm^3

First let us convert volume to m^3 units.

volume = 640 cm^3 * (1 m / 100 cm)^3 = 6.4 x 10^-4 m^3

so the mass is:

mass = 755 kg/m^3 * (6.4 x 10^-4 m^3)

4 0

3 years ago