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3 years ago

What happens to matter consumed in nuclear fusion?

Physics

1 answer:

lyudmila [28]3 years ago

4 0

It is converted to energy according to E =mc^2

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You are at a furniture store and notice that a Grandfather clock has its time regulated by a physical pendulum that consists of

artcher [175]

Answer:

The distance is 1.026 m.

Explanation:

mass of rod, M = 1.23 kg

Length, L = 1.25 m

mass, m = 10 kg

Time period, T = 2 s

Let the distance is d.

The formula of the time period is given by

$T = 2\pi\sqrt\frac{\frac{1}{3}ML^2+md^2}{(M +m)g}\\\\2\times 2 = 4\pi^2\times \frac{\frac{1}{3}\times1.23\times1.25\times 1.25+ 10d^2}{(1.23 + 10)\times9.8}\\\\11.16 = 0.64 + 10d^2\\\\d= 1.026 m$

3 0

3 years ago

A magnetic field directed along the x-axis changes with time according to B (0.06t2+2.25) T, where t is in seconds. The field is

Gemiola [76]

Answer:

$E = 2 \times 10^{-3} V$

Explanation:

As we know that rate of change in flux will induce EMF

So here we can

$EMF = \frac{d\phi}{dt}$

now we have

$EMF = \pi r^2\frac{dB}{dt}$

now we also know that induced EMF is given by

$\int E. dL = \pi r^2\frac{dB}[dt}$

$E (2\pi r) = \pi r^2\frac{dB}{dt}$

$E = \frac{r}{2}(\frac{dB}{dt})$

now plug in all values in it

$E = \frac{0.0133}{2}(0.12 t)$

$E = 8 \times 10^{-4} (2.50) = 2 \times 10^{-3} V/m$

5 0

4 years ago

For which questions could a scientist develop a testable hypothesis? Check all that apply.

AlexFokin [52]

Answer:

sentences 2,3, and 5

Explanation:

You can run a test to see if it is true or not for the correct answers.. You cannot test a planets feelings. They do not have feelings. Also, prettiest planet is an opinion. There is no wrong or right with that. Hope this helps.

6 0

4 years ago

Read 2 more answers

A rookie quarter back throws a football with an initial upward velocity component of 12.0 m/s and a horizontal velocity componen

Kisachek [45]

Answer:

t = 1.22 s

Explanation:

Given that,

The initial upward velocity component of a football = 12 m/s

The horizontal velocity component is 20 m/s

We need to find the time required for the football to reach the highest point of the trajectory. Let the time is t.

Using first equation of motion to solve it such that,

$v=u+at$

u is initial velocity

v is final velocity

a = -g

so,

$t=\dfrac{u}{g}\\\\t=\dfrac{12}{9.8}\\\\t=1.22\ s$

So, the required time taken by the football to reach the highest point is 1.22 seconds.

3 0

3 years ago

What is the kinetic energy of a jogger with a mass of 65.0 kg traveling at a speed of 2.5m/s

Scrat [10]

Answer:

203.1J

Explanation:

Given parameters:

Mass = 65kg

Speed = 2.5m/s

Unknown:

Kinetic energy of jogger = ?

Solution:

To solve this problem, we use the kinetic energy equation:

K.E = $\frac{1}{2}$ m v²

m is the mass

v is the velocity

Now insert the parameters and solve;

K.E = $\frac{1}{2}$ x 65 x 2.5² = 203.1J

7 0

3 years ago