A stuntman jumps from height of 4.9 m with initial horizontal velocity of 4.5 m/s and lands on ground. How much time stuntman takes to reach ground? (g = 9.8 m/s²) 2s 4.5 s 1 s 1.2 s​

Answer:

a = 5.61

b = 12.46

c = 45.87

d = 61.16

e = 69.76

f = 141.5

g = 704.92

h = 38.361

Answer:

public facilities should me used with geary care because lots of people travel at the same time and accidents can happen

• The basic public facilities are education, food, transportation, health, electricity, sanitation, drinking water, security, etc.

• These facilities are provided by the government to the citizens that can be free or paid for the use of these facilities.

• Facilities like transportation can provide revenue to the government, reduce pollution, and traffic.

• Education facilities would result in an increase in literacy rate, employment, and financial independence.

Grignard's reagent is an organo-magnesium halide having the general chemical formula as (R-Mg-X) which is used to form a Carbon-Carbon bond and reduce an aldehyde or ketone to alcohol.

• "R" is the organic part of the compound. "X" is a halogen, otherly known as group 17 elements like Flourine, Chlorine, etc.
• The compound helps us to create the rather difficult C-C bond or carbon-carbon bond.

• In Grignard's reaction, the desired alkyl, allyl or any carbonyl group is added to the magnesium halide which is then reacted with an aldehyde or ketone to reduce it to alcohol and add the carbonyl group to the organic compound.

The reaction of water on methyl magnesium bromide in dry ether forms methane.

CH₃-Mg-Br + H₂0  --> CH₄ (methane) + Br-Mg-OH

The lone pair electrons on the oxygen atom attack the methyl carbon and remove the MgBr part from the compound and replace it with a Hydrogen atom to form methane.

The action of Zn-HCL on ethyl iodide is that it reduces ethyl iodide to ethane.

CH₃-CH₂-I + 2[H] [tex]\frac{Zn}{HCL}[/tex]-->  CH₃-CH₃ (ethane) +  HI

Zn/HCL acts as a reducing agent thus when reacted with ethyl iodide, the nascent Hydrogen atoms attack the iodine part of the compound and replace it thus forming ethane and Hydroflouride.

Answer:

The weight of Guddy's school bag is 1 kg.

Step-by-step explanation:

please mark me brainliest

Information provided with us:

➪ The bag contain 4 books of 100 g each and 3 books of 200 g each

✰ What we have to calculate ༄

• ➪ The required total weight of bag in kg

✰So ༄

➪ The weight of 4 books of 100 g each

[tex]\implies \sf \:4 \times 100 \: g [/tex]

[tex]\implies \sf \:400 \: g [/tex]

➪ The weight of 3 books of 200 g each

[tex]\implies \sf \: 3 \times 200 \: g[/tex]

[tex]\implies \sf \:600 \: g [/tex]

✰Therefore ༄

➪Total weight of all books

[tex]\implies \sf \: 600 \: g + 400 \: g[/tex]

[tex]\implies \sf \: 1000 \: g[/tex]

✰ We know that ༄

[tex]\clubsuit \: \rm 1 \: kg \: = 1000 \: gram [/tex]

➪ So Convert 1000 gram into kg by dividing it by 1000

[tex] \rm \implies \: 1000 \div 1000[/tex]

[tex] \longrightarrow\bigstar \: \: \sf\boxed{\bold{\orange{ 1 \: kg}}}\: \: \: \bigstar\\[/tex]

✰Therefore ༄

➪ The required total weight of bag is

[tex] \longrightarrow\bigstar \: \: \sf\boxed{\bold{\pink{1\:kg }}}\: \: \: \bigstar\\[/tex]