If a car can go from 0 to 60 mi/hr in 8.0 seconds, what would be its final speed after 5.0 seconds if its starting speed were 50 mi/hr?

Answers

Answer 1

Answer: $a= (V)/(t) \ \ \ \Rightarrow\ \ a= (60\ [mi/hr])/(8\ [s]) \n \nthe\ final\ speed\ after\ 5.0\ seconds\n \nV=50\ [mi/hr]+5\ [s]\ \cdot (60\ [mi/hr])/(8\ [s])=50\ [mi/hr] + (5)/(8) \cdot 60\ [mi/hr]=\n \n=50\ [mi/hr]+37.5\ [mi/hr]=87.5\ [mi/hr]$

Answer 2

Answer: $v_1=60\ (mi)/(h)\n\nt_1=8.0\ s=(8)/(3600)\ h=(1)/(450)\ h\n--------------\na=(v)/(t)\n\na=(60)/((1)/(450))\ (mi)/(h^2)=27000\ (mi)/(h^2)\n--------------\nv_o=50\ (mi)/(h)\n\nt=5.0\ s=(5)/(3600)\ h=(1)/(720)\ h\n--------------$

$v=v_o+at\n\n\nv=50\ (mi)/(h)+27000\ (mi)/(h^2)\cdot(1)/(720)\ h=50\ (mi)/(h)+37.5\ (mi)/(h)=87.5\ (mi)/(h)\leftarrow Answer$

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PLEASE ANSWER: How does meiosis affect inheritance through your genes?

Answers

Yes your genes are inherited from your parents. This is because when the egg and sperm meet, and the egg add sperm meet, and the egg is ferlized and the offspring (childs) cells cells are formed by the union.

Meiosis is basically where your cells chromosomes are doubled, then split, and then halved. You are then resulted with a perm or egg, depending on your sex. Because through the process, the cell is doubled, split and then halved, we are left with half as many chromosomes as we have in a regular cell. This is so that when the sperm and egg meet, we have a the original amount of chromosomes for 1 cell. These chromosomes are what affect your body's make up - half from your mum and half from your dad.

A distance between two consecutive troughs in a wave motion train produced in a string is 5 cm. Find speed of wave , if two complete waves pass through any point per second

Answers

Speed= (frequency) x (wavelength)

= (2 per second) x (5 cm) = 10 cm/sec .

what is the restoring force of a spring with a spring constant of a 4a and a stretched displacement of 3b?

Answers

Answer:

Thus, the restoring force is - 12 a b.

Given:

Spring constant = 4 a

Stretched displacement = 3 b

To find:

Restoring force = ?

Formula used:

The restoring force is given by,

F = -k x

Where F = restoring force

spring constant = k = 4 a

stretched displacement = x = 3 b

Solution:

The restoring force is given by,

F = -k x

Where F = restoring force

spring constant = k = 4 a

stretched displacement = x = 3 b

F = - (4 a) (3 b)

F = - 12 a b

Thus, the restoring force is - 12 a b.

Atoms from which two elements would form ionic bonds

Answers

Answer:

Explanation:

Ionic bonds are formed by transfer of electrons between metal and non metals. Electronic configuration of calcium: Calcium atom will lose two electron to gain noble gas configuration and form calcium cation with +2 charge.

hope this helps

A foot strikes the floor with a force of 520N at an angle of 20 degrees. what is the friction force exerted by the foot?

Answers

Answer:

Friction force on the ground is 488.6 N

Explanation:

As we know that the force of reaction which is along the horizontal surface in tangential direction is known as Friction force while other perpendicular component of the force is Normal force

Here we know that force is inclined at 20 degree with the horizontal

so we have

$F_f = F cos\theta$

here we know

F = 520 N

$\theta = 20 degree$

so we have

$F_f = 520 cos20$

$F_f = 488.6 N$

What does the color of a star determine

Answers

the color of light that a star emits is somewhat related to its age, whereas the color of light that we actually observe from a star is related to the speed at which it's moving with respect to us.

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