Displacement is distance combined with

Answers

Answer 1

Answer: Its combined with direction.

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True or false:when a plant falls from a window it's thermal energy is transformed into kinetic energy.
Lithium has 3 protons. how many neutrons are in the isotope lithium -8
Where does potential energy come from
A large bottle contains a number of medicinal tablets each having a mass of 250mg. The mass of all the tablets is 1 kg. Calculate the number of tablets in the bottle.
A 139 kg physics professor has fallen into the Grand Canyon. Luckily, he managed to grab a branch and is now hanging 89 m below the rim. A student (majoring in linguistics and physics) decides to perform a rescue/experiment using a nearby horse. After lowering a rope to her fallen hero and attaching the other end to the horse, the student measures how long it takes for the horse to pull the fallen physicist to the rim of the Grand Canyon. The acceleration of gravity is 9.8 m/s 2 . If the horse’s output power is truly 1 horsepower (746 W), and no energy is lost to friction, how long should the process take? Answer in units of s.

A weightless spring is stretched 10 cm by a suspended 1-kg block. If two such springs are used to suspend the block, one spring above the other, to effectively provide one double-length spring, then the total stretch of the double-length spring will be

Answers

Answer:

total stretch of the double-length spring will be 20 cm

Explanation:

given data

length x1 = 10 cm

mass = 1 kg

mass = double = 2 kg

to find out

the total stretch of the double-length spring will be

solution

we can say here spring constant is

k = mg ............1

k is spring constant and m is mass and g is acceleration due to gravity

so for in 1st case and 2nd case with 1 kg mass and 2 kg mass

kx1 = mg .........................2

and

kx2 = 2mg ........................3

x is length

so from equation 2 and 3

$(kx1)/(kx2)= (1mg)/(2mg)$

$(x1)/(x2) = (1)/(2)$

$(10)/(x2) = (1)/(2)$

x2 = 20

so total stretch of the double-length spring will be 20 cm

A bulldozer does a work of 50,000 Joules to move a boulder through a distance of 15m. how much force is applied to move the boulder

Answers

Answer:

Force applied by bull dozer is 3333.33 joules.

Explanation:

Which is not a way to accelerate an object? A. Speed it up
B. Slow it down
C. Change its direction
D. Apply balanced forces

Answers

Slowing it down is not a way to accelerate an object. The answer is letter B. Speeding it up, changing its direction and applying balanced forces are ways to accelerate the object

I would definitely think its B....

In a motor, the combined effect of electric currents and magnetic forces turn electrical energy into which of the following? A. A battery

B. A generator

C. Mechanical energy

D. Electromagnetic energy

Answers

When you turn on a ceiling fan it turns the electrical energy that is running into the motor in the fan into motion. This motion is described as Mechanical energy. Therefore your answer would be C mechanical energy.

(a) What is the magnitude of the tangential acceleration of a bug on the rim of a 12.5-in.-diameter disk if the disk accelerates uniformly from rest to an angular speed of 75.0 rev/min in 3.80 s

Answers

Answer:

Explanation:

Given:

d=12.5in=0.3175m

r=d/2=0.3175/2=0.15875m

ωf=75rev/min=7.85rad/s

t=3.80s

The angular acceleration

$\alpha = (\omega _f - \omega _i)/(t)=(7.85-0)/(3.80)=2.07rad/s^2$

Tangential acceleration

$\alpha =r\alpha =0.15875* 2.07=0.33m/s^2$

Imagine that a tank is filled with water. The height of the liquid column is 7 meters and the area is 1.5square meters (m2
). What's the force of gravity acting on the column of water?
A. 73,500 N
B. 102,900 N
C. 68,600 N
D. 110,700 N