All categories

3 years ago

PHYSICS 50 POINTS PLEASE HELP

Physics

2 answers:

babymother [125]3 years ago

7 0

Newton’s First Law of Motion - if an object is at rest, it takes un-

balanced forces to make it move. Conversely, if an object is moving

it takes an unbalanced force to make it change it’s direction or speed.

Newton was the first to see that such apparently diverse phenomena as a satellite moving near the Earth's surface and the planets orbiting the Sun operate by the same principle: Force equals mass multiplied by acceleration, or F=ma.

zaharov [31]3 years ago

4 0

Answer:

PLEASE HELP

Explanation:

You might be interested in

If your mass is 63.7 kg, and you are standing 7.5 m away from a boulder with

klasskru [66]

6.67x10= 66.7 66.7-11=55.7

8 0

3 years ago

Read 2 more answers

A galvanometer can be calibrated to read electric A) current B) Voltage C) either of these D) neither of these

4vir4ik [10]

The answer is A) electric current ⚡️
Can i have brainliest

7 0

3 years ago

Please help me guys a. b. c.

Mademuasel [1]

Answer:

I think its b lol correct me if I'm wrong

6 0

3 years ago

A race car driver loses his leg in an accident. Apply Lamarck's and Darwin's theories of evolution to predict whether this disab

ASHA 777 [7]

It will not be carried to children ... because genetic defect can be carried to children, not the defect during his lifetime

7 0

3 years ago

In a microwave oven, electrons describe circular motion in a magnetic field within a special tube called amagnetron; as you'll l

QveST [7]

Answer:

The magnetic field strength and the electrons' energy are 0.077 T and 0.8906 eV.

Explanation:

Given that,

Diameter = 2.62 mm

Frequency = 2.15 GHz

(A). We need to calculate the magnetic field strength

Using formula of the magnetic field strength

$B=\dfrac{2\pi mf}{e}$

Where, f = frequency

e = charge of electron

Put the value into the formula

$B=\dfrac{2\times3.14\times9.1\times10^{-31}\times2.15\times10^{9}}{1.6\times10^{-19}}$

$B=0.077\ T$

(B). We need to calculate the energy of electron

Using formula of energy

$E=\dfrac{1}{2}m(r\omega)^2$

$E=\dfrac{1}{2}\times9.1\times10^{-31}\times(1.31\times10^{-3}\times2\pi\times2.15\times10^{9})^2$

$E=1.4249\times10^{-16}\ J$

The energy in eV

$1 eV=1.6\times10^{-16}\ J$

$E=\dfrac{1.4249\times10^{-16}}{1.6\times10^{-16}}$

$E=0.8906\ eV$

Hence, The magnetic field strength and the electrons' energy are 0.077 T and 0.8906 eV.

5 0

3 years ago