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3 years ago

Claudia stubs her toe on the coffee table with a force of 100.ON. A) What is the

Physics

1 answer:

slamgirl [31]3 years ago

7 0

Answer:

A.) acceleration= 55.6m/s^2

B.) acceleration of table= 5.0m/s^2

C.) More acceleration

Explanation:

A.) 100N/1.8kg= -55.6

B.) 100N÷20kg= 5

C.) Because since the table would have less mass, it would have had to accelerate more

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A hot-air balloon consists of a basket hanging beneath a large envelope filled with hot air. A typical hot-air balloon has a tot

Deffense [45]

Answer:

1.05045 kg/m³

Explanation:

$\rho_a$ = Density of air = 1.26 kg/m³

$\rho_{ha}$ = Density of hot air

$m_a$ = Mass of balloon = 539 kg

g = Acceleration due to gravity = 9.81 m/s²

v = Volume of air in balloon = $2.62\times 10^3\ m^3$

The net force on the balloon will be

$F_n=(\rho_a-\rho_{ha})vg$

Also

$F_n=m_ag$

$\\\Rightarrow 549g=(\rho_a-\rho_{ha})vg\\\Rightarrow 549=(1.26-\rho_{ha})2.62\times 10^3\\\Rightarrow -\rho_{ha}=\frac{549}{2.62\times 10^3}-1.26\\\Rightarrow \rho_{ha}=1.05045\ kg/m^3$

The density of hot air inside the envelope is 1.05045 kg/m³

4 0

2 years ago

A disk of radius 25 cm spinning at a rate of 30 rpm slows to a stop over 3 seconds. What is the angular acceleration? B. How man

iVinArrow [24]

Answer:

Explanation:

30 rev/min (2π rad/rev) / (60 s/min) = π rad/s

α = Δω/t = (0 - π)/3 = π/3 rad/s²

θ = ½αt² = ½(π/3)3² = 1.5π radians

θ = 1.5π rad/2π rad/rev = 0.75 rev

8 0

2 years ago

mike walked 450 m west. he then turned and walked 150 m to the east in 300 seconds. what is his velocity?

emmasim [6.3K]

Velocity = Displacement / time

Displacement = 450 - 150 = 300.

By the time he walked 150 East, he walked backwards. Hence displacement is 300 m West.

Velocity = 300m / 300 s

= 1 m/s

6 0

2 years ago

A golfer, putting on a green, requires three strokes to "hole the ball." During the first putt, the ball rolls 4.6 m due east. F

Kipish [7]

Answer: To "hole the ball: on the very first putt is requered is required a 7.08 m displacement at an angle 11.03° north of east.

Explanation:

Let's add each stroke as vectors