Is the desert hot or cold?

A ball is dropped off the side of a bridge,<br> After 1.55 S, how far has it fallen?<br> (Unit=m)

kow [346]

Answer:

Distance S = 11.77 m (Approx.)

Explanation:

Given:

Time t = 1.55 Second

Gravity acceleration = 9.8 m/s²

Find:

Distance S

Computation:

S = ut + (1/2)(g)(t)²

S = (0)(1.55) + (1/2)(9.8)(1.55)²

Distance S = 11.77 m (Approx.)

7 0

3 years ago

A dumbbell-shaped object is composed by two equal masses, m, connected by a rod of negligible mass and length r. If I1 is the mo

Sati [7]

Answer:

The correct answer to the following question will be Option A (I1 > I2).

Explanation:

Method for moment of inertia because of it's viewpoint including object at a mean distance "r" from the axis is,

⇒ mr²

Let the length of a rod be "r".

The axis passes via the middle of that same rod so that the range from either the axis within each dumbbell becomes " $\frac{r}{2}$ ".

Now,

Now total moment of inertia = sum of inertial moment due to all of the dumbbell

⇒ $l1=m(\frac{r}{2})^2+m(\frac{r}{2})^2$

⇒ $\frac{mr^2}{2}$

Axis moves via one dumbbell because its range from either the axis becomes zero (0) and its impact is zero only at inertia as well as other dumbbell seems to be at a range "r" from either the axis

Now,

Total moment of inertia = moment of inertia of dumbbell at distance "r".

$l2=mr^2$

And now we can infer from this one,

⇒ $mr^2>\frac{mr^2}{2}$

So that "I1 > I2" is the right answer.

5 0

4 years ago

Question 27 (Mandatory) (11 points)

Lostsunrise [7]

Groups

Same number of valence electrons

Li, Na, K

Explanation:

A.

If the periodic table is not color coded, the groups of elements gives the arrangement of atoms with the same chemical properties.

All elements that are in the same group have the same chemical properties.

Periodic table groups are also called family. They are the vertical columns on the periodic table.

B.

Elements that same number of electrons in outermost shell have the same chemical properties.

The outermost shell is called the valence shell of an atom.

They are the shell containing the most loosely held electrons. Group 1 has just one electron in their outermost shell.

C.

Li Na k group 1

F Cl Br group 7

learn more:

Periodic table brainly.com/question/2014634

Groups brainly.com/question/2690837

#learnwithBrainly

4 0

4 years ago

A cube 10.0 cm on each side has a density of 2.053 x 10^4 kg/m^3. It’s apparent weight in fresh water is 192 N. Find the buoyant

insens350 [35]

Answer:

9 N

Explanation: Given that L = side of the cube = 10cm = 0.1m

Mass = Density * Volume

Let’s determine the volume of the cube in m^3.

V = L^3

V = 0.1^3 = 0.001m^3

Mass = 0.001 * 2.053 * 10^4 = 20.53kg

Weight = 20.53 * 9.8 = 201.194

Buoyant force = 201.194 – 192 = 9.194 N

This is approximately 9 N.

6 0

4 years ago

Suppose a parachutist lands on a high-voltage wire and grabs the wire as she prepares to be rescued.(a) Will she be electrocuted

Kamila [148]

Suppose a parachutist lands on a high-voltage wire and grabs the wire as she prepares to be rescued, she will not be electrocuted.

<h3>What is Voltage?</h3>

This is referred to as the difference in electric potential between two points or the work done which is needed per unit to move a charge between two points in a circuit.

If she grabs the wire as she prepares to be rescued, she will not be electrocuted because the net electrical potential will be 0.

In a situation where the wire breaks as she holds on to it then she will be electrocuted.

Read more about Voltage here brainly.com/question/1176850

#SPJ4

6 0

2 years ago