All categories

2 years ago

Using the formula below, calculate the kinetic energy of the 6 gram stone going 10 Mph

Physics

1 answer:

dusya [7]2 years ago

4 0

Answer:

Explanation:

A wonderful (NOT) mixed unit problem

convert mph to m/s

v = 10 mi/hr(5280 ft/mi)(12 in/ft)(2.54 cm/in) / (100 cm/m) / (3600 s/hr)

v = 4.4704 m/s

KE = ½(0.006)4.4704²

KE = 0.05995342848 J

KE = 0.06 J

You might be interested in

What type of machine would most likely be used to move buckets of the mineral pieces up to the surface of the Earth? a wedge a p

inessss [21]

The type of machine would be a pulley.

3 0

3 years ago

A car's bumper is designed to withstand a 5.04-km/h (1.4-m/s) collision with an immovable object without damage to the body of t

aleksklad [387]

Answer:

3420.39 N

Explanation:

Applying,

Fd = 1/2(mv²-mu²)................. Equation 1

Where F = force on the bumber, d = distance, m = mass of the car, v = final velocity, u = initial velocity.

make F the subject of the equation

F = (mv²-mu²)/2d............... Equation 2

From the question,

Given: m = 890 kg, v = 0 m/s (to rest), u = 1.4 m/s, d = 0.255 m

Substitute these values into equation 2

F = [(890×0²)-(890×1.4²)]/(2×0.255)

F = -1744.4/0.51

F = -3420.39 N

The negative sign denotes that the force in opposite direction to the motion of the car.

5 0

3 years ago

What is the power of a kitchen blender if it can perform 2000 joules of work in 5 seconds ?

soldier1979 [14.2K]

Power = (work done) / (time to do the work)

Power = (2000 J) / (5 sec)

<em>Power = 400 watts</em>

7 0

3 years ago

benzene c6h6 and toluene c6h5ch3 for ideal solutions. at 35c the vapor pressure of benzene is 160 torr and that of toluene is 50

LuckyWell [14K]

Answer:

mole fraction of toluene 0.53

Explanation:

given data:

vapor pressure of benzene = 160 torr

vapor pressure of toluene = 50 torr

mole of benzene = 3.8 mol

mole of toluene = 5.7 mol

calculate total pressure

here total pressure = mole fraction of toluene x vapour pressure of toluene + mole fraction of benzene x vapor pressure of benzene

mole fraction of toluene $= \frac{5.7}{5.7+3.8}$

mole fraction of Benzene $= \frac{3.8}{5.7+3.8}$

$= \frac{5.7}{( 5.7 + 3.8 )}*50 + \frac{3.8}{5.7 + 3.8}*160$

= 94 torr

we have mole fraction of toluene in vapor phase =\frac{50}{94} =

= 0.53 (ans)

6 0

3 years ago

What is the total number of components into which a single force can be reso

anygoal [31]

Two components (vertical and horizontal)

6 0

4 years ago