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3 years ago

There are three known forms of uranium. These forms are called _____ of each other.

Physics

1 answer:

otez555 [7]3 years ago

3 0

Answer:

A. Isotopes

Explanation:

The answer is isotopes. Isotopes are different kind of atoms of the same element.

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if you have a 1.5 L container of tea and the label state that the container contains 1.2 g of sugar grams of sugar what's the co

astraxan [27]

Given data

mass of solute (m) = 1.2 g ,

Volume of solution = 1.5 L ,

= 1.5 × 1000 mL

= 1500 mL ,

What is the concentration of solution = ?

concentration = (mass of solute) ÷ (100 mL of solution)

= (1.2) ÷ (1500 mL of solution)

 Note:  remember to divide both numerator and denominator by 15 to get concentration per 100 ml

Therefore concentration = 0.1 /100 mL ;

The concentration of sugar in a tea is 0.1/100 mL

3 0

4 years ago

A long solenoid, of radius a, is driven by an alternating current, so that the field inside is sinusoidal: B(t) B cos(ot)ż. A ci

Scrat [10]

Answer:

The current induced in the loop is $\dfrac{\pi a^2 B\omega}{4R}\ \sin(\omega t)$ .

Explanation:

Given that,

Magnetic field $B(t)=B\cos(\omega t)\ z$

Radius $r =\dfrac{a}{2}$

Resistance =R

We need to calculate the area of the loop

Using formula of area

$A = \pi r^2$

Put the value of r in to the formula

$A =\pi\times(\dfrac{a}{2})^2$

$A=\dfrac{\pi a^2}{4}$

We need to calculate the flux

Using formula of flux

$\phi=BA$

$\phi=B\cos(\omega t)\dfrac{\pi a^2}{2}$

We need to calculate the emf

Using formula of emf

$\epsilon=-\dfrac{d\phi}{dt}$

$\epsilon=-\dfrac{-\pi a^2B}{4}(-\omega\sin\omega t)$

$\epsilon=\dfrac{\pi a^2B\omega\sin(\omega t)}{4}$

We need to calculate the current

Using formula of current

$I(t)=\dfrac{\epsilon}{R}$

$I(t)=\dfrac{\dfrac{\pi a^2B\omega\sin(\omega t)}{4}}{R}$

$I(t)=\dfrac{\pi a^2 B\omega}{4R}\ \sin(\omega t)$

Hence, The current induced in the loop is $\dfrac{\pi a^2 B\omega}{4R}\ \sin(\omega t)$ .

4 0

3 years ago

-poopp poopoop jujuj

san4es73 [151]

Answer:

okay.........

Explanation:

3 0

3 years ago

Read 2 more answers

Density of water is 1000 kg/m3 and that of glass is 2500 kg/m3 . The speed of light will be maximum in

dalvyx [7]

Water I believe sorry if wrong

6 0

3 years ago

A 5 kg bowling ball travelling at 2 m/s hits a motionless 10 kg bowling ball. If the smaller ball bounces back at a speed of -1

Ilia_Sergeevich [38]

Answer:

1.5 m/s

Explanation:

Conservation of momentum means the momentum of the system before the collision is the same as after.

The before, after momentum of each ball is ...

5 kg ball: (5 kg)(2 m/s), (5 kg)(-1 m/s)

10 kg ball: (10 kg)(0 m/s), (10 kg)(v)

The sum of the "before" products is the same as the sum of the "after" products:

(5 kg)(2 m/s) +0 = (5 kg)(-1 m/s) +(10 kg)v

(10 +5) kg·m/s = (10 kg)·v . . . . . add (5 kg)(1 m/s) to both sides

v = (15 kg·m/s)/(10 kg) = 1.5 m/s

The speed of the larger ball will be 1.5 m/s. Its direction of motion will be the opposite of that of the 5 kg ball after the collision.

7 0

3 years ago