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Liula [17]
3 years ago
11

A man is using a parachute to come down from an aircraft. Name the force which is

Physics
1 answer:
Katena32 [7]3 years ago
4 0

Answer:

gravity is the force pulling him down.   without the parachute as a force acting against gravity... he would fall much much faster  :/  

Explanation:

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a tire rolls from rest to an angular velocity of 6 radians per second. the angle it turns through is 12 radians. what is the ang
True [87]

Answer:

\alpha =1.5\ rad/s^2

Explanation:

Given that,

Initial angular velocity, \omega_i=0

Final angular speed, \omega_f=6\ rad/s

Angular displacement, \theta=12\ rad

We need to find the angular acceleration of the tire. We can find it using the third equation of rotational kinematics. So,

\omega_f^2-\omega_i^2=2\alpha \theta\\\\\alpha =\dfrac{\omega_f^2-\omega_i^2}{2\theta}\\\\\alpha =\dfrac{6^2-0^2}{2\times 12}\\\\\alpha =1.5\ rad/s^2

So, the angular acceleration of the tire is equal to 1.5\ rad/s^2.

7 0
3 years ago
Winnie the Pooh pushes a jug of with a force of 60 Newtons 3.5 meters. How much work did he do?
KonstantinChe [14]

Answer:

For him being such a fat bear, it would have taken alot of work

Explanation:

7 0
3 years ago
At which temperature do the lattice and conduction electron contributions to the specific heat of Copper become equal.
sp2606 [1]

Answer:

At 3.86K

Explanation:

The following data are obtained from a straight line graph of C/T plotted against T2, where C is the measured heat capacity and T is the temperature:

gradient = 0.0469 mJ mol−1 K−4 vertical intercept = 0.7 mJ mol−1 K−2

Since the graph of C/T against T2 is a straight line, the are related by the straight line equation: C /T =γ+AT². Multiplying by T, we get C =γT +AT³ The electronic contribution is linear in T, so it would be given by the first term: Ce =γT. The lattice (phonon) contribution is proportional to T³, so it would be the second term: Cph =AT³. When they become equal, we can solve these 2 equations for T. This gives: T = √γ A .

We can find γ and A from the graph. Returning to the straight line equation C /T =γ+AT². we can see that γ would be the vertical intercept, and A would be the gradient. These 2 values are given. Substituting, we f ind: T =

√0.7/ 0.0469 = 3.86K.

4 0
3 years ago
The seatbelt across your chest should have about ______ fist width of slack
OLEGan [10]
The correct answer is option (c) i.e. one

<span>The seat belt across your chest should have about one fist width of the slack. Because the seat belt across your chest is required to have minimum fist width of the slack to hold the body in place and to avoid slamming of the body against the seat belt in case of a collision at high speeds. To have one fist width of the slack, makes it a safest to wear it in case of any collision. </span>
7 0
3 years ago
Name three categories that are used to classify the elements in the periodic table?
nikitadnepr [17]

Answer:

metals,nonmetals, and inert gases

Explanation:

6 0
3 years ago
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