The instantaneous velocity of an object is the Blank of the object with a Blank.

14. measuring cylinder containing some water stands on a scale pan. A solid ball is lowered into the water. The water level rise

Basile [38]

Answer:

Let d be the density of fluid.

So , Initial reading of balance, F1 =30dg N

After the level reaches 50cm^3

Final reading of balance , F2 =50dg N

Given that difference between final and initial reading is 30g

i.e, F2 −F1

=30 g

⟹50dg−30dg=30g

⟹20dg=30g

⟹d=30g/20g

⟹d=1.5g/cm^3

So, density of fluid is 1.5g/cm^3

8 0

3 years ago

Explain what each quantum number in a quantum number set tells you about the electron. Compare and contrast the locations and pr

Allisa [31]

There are four quantum numbers:
1) Principal quantum number which tells the shell in which the electron is and is an integer number starting from 1. Both of these electrons are in the same shell, the third.

2) Azimuthal quantum number which tells the subshell of the electron. This has a value of an integer starting from 0, 0 being the s orbital. The first electron is in the d orbital due to the number being 2 and the second is in the p orbital due to the number being 1.

3) Magnetic quantum number tells the orbital within the subshell. The first electron is in the -1 orbital of the d subshell (which has values from -2 to 2) and the second is in the -1 orbital of the p subshell (which has values from -1 to 1).

4) Spin quantum number which specifies the spin on the electron, both of the electrons have the same spin.

3 0

4 years ago

Photoelectrons with a maximum speed of 7.00 · 105 m/s are ejected from a surface in the presence of light with a frequency of 8.

lord [1]

This is just testing your ability to recall that kinetic energy is given by:

k.e. = ½mv² 

where m is the mass and v is the velocity of the particle. 

The frequency of the light is redundant information. 

Here, you are given m = 9.1 * 10^-31 kg and v = 7.00 * 10^5 m/s. 
Just plug in the values: 

k.e. = ½ * 9.1 * 10^-31 * (7.00 * 10^5)² 
k.e. = 2.23 * 10^-19 J
so it will be d:2.2*10^-19 J

4 0

3 years ago

2 Why Force is needed

nirvana33 [79]

Answer:

The use of force in our everyday life is very common. We use force to walk on the road, to lift the objects, to throw a cricket ball, or to move a given body by some particular speed or direction. We are very familiar with the various effects of force. We can exert pull and push.

Explanation:

plzzz brainlist me

3 0

3 years ago

A river 1.00 mile wide flows with a constant speed of 1.00 mph. A man can row a boat at 2.00 mph. He crosses the river in a dire

gladu [14]

To solve this problem we will apply the geometric concepts of displacement according to the description given. Taking into account that there is an initial displacement towards the North and then towards the west, therefore the speed would be:

$V_T^2=v_N^2-v_W^2$