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Novosadov [1.4K]

2 years ago

6

The force of gravity is twice as great on a 2-kg rock as on a 1-kg rock. Why then, dose the 2-kg rock not fall with twice the ac

celleration?

1 answer:

Phoenix [80]2 years ago

8 0

Answer:

because all objects fall at a rate of 9.8m/s²

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Rgfffffffffffffffffffffffffffffffffffffffffffffffffffffff

goblinko [34]

Roygbv evjnefvvnefv ekfv k kn ke nv

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2 years ago

3. A 5 gm/100 ml solution of drug X is stored in a closed test tube

JulijaS [17]

Answer:

See explanation

Explanation:

The degradation of the drug is a first order process;

Hence;

ln[A] = ln[A]o - kt

Where;

ln[A] = final concentration of the drug

ln[A]o= initial concentration of the drug = 5 gm/100

k= degradation constant = 0.05 day-1

t= time taken

When [A] =[ A]o - 0.5[A]o = 0.5[A]o

ln2.5 = ln5 - 0.05t

ln2.5- ln5 = - 0.05t

t= ln2.5- ln5/-0.05

t= 0.9162 - 1.6094/-0.05

t= 14 days

b) when [A] = [A]o - 0.9[A]o = 0.1[A]o

ln0.5 = ln5 -0.05t

t= ln0.5 - ln5/0.05

t= -0.693 - 1.6094/-0.05

t= 46 days

5 0

3 years ago

What kind of energy does a flying bullet have?

Musya8 [376]

It mainly travels by kinetic energy

3 0

3 years ago

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The force required to stretch a Hooke’s-law spring varies from 0 N to 63.5 N as we stretch the spring by moving one end 5.31 cm

Alika [10]

Answer:

Force constant will be 1195.85 N/m

Work done will be 1.6859 J

Explanation:

We have given the force, F = 63.5 N

Spring is stretched by 5.31 cm

So x = 0.0531 m

Force is given , F = 63.5 N

We know that force is given by $F=kx$

So $63.5=k\times 0.0531$

k = 1195.85 N/m

Now we have to find the work done

We know that work done is given by

$W=\frac{1}{2}kx^2=\frac{1}{2}\times 1195.85\times 0.0531^2=1.6859J$

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3 years ago

While an airplane is in flight, four forces act on it. Thrust is caused by the airplane's propellers pushing through the surroun

IceJOKER [234]

The answer would be weight

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3 years ago

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