All categories

3 years ago

1 hr 16 minutes equal how many minutes ?

Physics

1 answer:

Len [333]3 years ago

4 0

Answer:

76 minutes.

Explanation:

There are 60 minutes in an hour + 16 minutes= 76 minutes.

You might be interested in

A large crate with mass m rests on a horizontal floor. The static and kinetic coefficients of friction between the crate and the

____ [38]

Answer:

Explanation:

Check attachment for solution

6 0

3 years ago

PLEASE HELP!!

Travka [436]

Answer:

Walking while alternating knee lifts with each step.

Standing up and sitting down from a chair without using your hands.

Standing with your weight on one leg and raising the other leg to the side or behind you.

Explanation:

Those are the ones that I could best come up with.

7 0

3 years ago

A trailer truck with a 2000 [kg] cab and a 8000 [kg] trailer is traveling on a level road at 90 [km/hr].The brakes on the traile

NeX [460]

Answer:

a) t = 19.6 s, b) fr = 1.274 10⁴ N

Explanation:

This is a Newton's second law problem

Y Axis

for the cabin

N₁-W₁ = 0

N₁ = W₁

for the trailer

N₂- W₂ = 0

N₂ = W₂

X axis

for the cabin plus trailer, where friction is only in the cabin

fr = (m₁ + m₂) a

the friction force equation is

fr = μ N

we substitute

μ N₁ = (m₁ + m₂) a

μ m₁ g = (m₁ + m₂) a

a = μ g $\frac{m_1}{m_1 + m_2}$

let's calculate

a = 0.65 9.8 $\frac{2000}{2000+8000}$

a = 1,274 m / s²

a) to find the stopping distance we can use kinematics

Let's slow down the sI system

v₀ = 90 km / h (1000 m / 1km) (1h / 3600s) = 25 m / s

v = v₀ - a t

when it is stopped its speed is zero

0 = v₀ - at

t = v₀ / a

t = 25 / 1.274

t = 19.6 s

b) the friction force is

fr = 0.65 2000 9.8

fr = 1.274 10⁴ N

This is the braking force and also the forces that couple the cars.

3 0

3 years ago

A 800-gram grinding wheel 27.0 cm in diameter is in the shape of a uniform solid disk. (We can ignore the small hole at the cent

SSSSS [86.1K]

Explanation:

d = Diameter of wheel = 27 cm

r = Radius = $\frac{d}{2}=\frac{27}{2}=13.5\ cm$

m = Mass of wheel = 800 g

$\omega_i$ = Initial angular velocity = $245\times \frac{2\pi}{60}\ rad/s$

Equation of rotational motion

$\omega_f=\omega_i+\alpha t\\\Rightarrow \alpha=\frac{\omega_f-\omega_i}{t}\\\Rightarrow \alpha=\frac{0-245\times \frac{2\pi}{60}}{50}\\\Rightarrow \alpha=-0.51312\ rad/s^2$

Moment of inertia is given by

$M=\frac{1}{2}mr^2\\\Rightarrow M=\frac{1}{2}\times 0.8\times 0.135^2\\\Rightarrow M=0.00729\ kgm^2$

Torque is given by

$\tau=I\alpha\\\Rightarrow \tau=0.00729\times -0.51312\\\Rightarrow \tau=-0.0037406448\ Nm$

The torque the friction exerts is -0.0037406448 Nm

For more information on torque and moment of inertia refer

brainly.com/question/13936874

brainly.com/question/3406242

7 0

3 years ago

How is velocity different than speed?

spayn [35]

I hope this helps

velocity is the rate and speed of an objects moving.

Speed is the time rate an object is moving along a path

5 0

3 years ago

1 hr 16 minutes equal how many minutes ?​

1 hr 16 minutes equal how many minutes ?