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3 years ago

The raising and lifting the ball by kicking is called

Physics

1 answer:

Minchanka [31]3 years ago

6 0

The raising and lifting the ball by kicking is a B) Scoop

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The center of mass of a 0.30-kg (non-uniform) meter stick is located at its 45-cm mark. What is the magnitude of the torque (in

lbvjy [14]

Answer:

The magnitude of the torque due to gravity if it is supported at the 28-cm mark is 0.5 N-m.

Explanation:

Given that,

Mass of the meter stick, m = 0.3 kg

Center of mass is located at its 45 cm mark.

We need to find the magnitude of the torque due to gravity if it is supported at the 28-cm mark. Torque acting on the object is given by :

$\tau=r\times F\\\\\tau=(45-28)\times 10^{-2}\times 0.3\times 9.79\\\\\tau=0.499\ N-m$

$\tau=0.5\ N-m$

So, the magnitude of the torque due to gravity if it is supported at the 28-cm mark is 0.5 N-m.

6 0

4 years ago

A 12 volt car battery pushes charge through the headlight resistance of 10 ohms. How much current is passing through the circuit

dusya [7]

Answer:50

Explanation:

6 0

3 years ago

Question in picture.

Gelneren [198K]

<h2>Hello!</h2>

The answer is: A. 19.3 joules

Since it's an elastic collision, the kinetic energy after and before the collision will be the same.

Kinetic energy can be calculated using the following equation:

$KE=\frac{1}{2}mv^{2}$

Where:

$KE=KineticEnergy\\m=mass\\v=velocity$

So,

First object, (going to the right):

$m=7.20kg\\v=2\frac{m}{s}$

$KE_{1}=\frac{1}{2}*7.20Kg*(2\frac{m}{s})^{2}=14.4Joules$

Second object:, (going to the left):

$m=5.75kg\\v=-1.30\frac{m}{s}$

$KE_{2}=\frac{1}{2}*5.75kg*(-1.30\frac{m}{s})^{2}=4.86Joules$

Remember,

$1Joule=1Kg.\frac{m^{2}}{s^{2} }$

Hence,

The total kinetic energy after the collision will be:

$T=KE_{1}+KE_{2}=14.4Joules+4.86joules=19.26joules=19.3joules$

The total kinetic energy after the collision is 19.3 joules (rounded to the nearest tenth)

Have a nice day!

6 0

3 years ago

If water completely boils in 7 minutes, how long does it take to evaporate

Lapatulllka [165]

Answer: 20 minutes

Explanation: omm its 20 minutes

4 0

2 years ago

use the periodic table to determine which of the following would be an isotope of bromine (br) check all that apply

gayaneshka [121]

The isotopes of a element is defined as the atoms having same atomic number and different mass number.

As per periodic table Br has atomic umber Z=35 and its atomic mass is given as 79.904 or 79.

As per the question nothing has been mentioned .

so all the atoms whose atomic number will correspond to 35 will be considered as the isotope of bromine.

Generally Bromine exhibits two isotopes which are stable.The isotopes are Bromine-81 and Bromine-77.

Some times during the process of gamma decay Bromine forms many radio isotopes also which are unstable.

5 0

4 years ago