ericgideon
19.08.2019 •
Physics
The thrust from a car is 590 n. the air resistance and friction together total 680 n. what happens to the speed of the car?
Solved
Show answers
More tips
- G Goods and services How to sew a ribbon: Tips for beginners...
- F Food and Cooking How to Make Mayonnaise at Home? Secrets of Homemade Mayonnaise...
- C Computers and Internet Which Phone is Best for Internet Surfing?...
- F Food and Cooking Everything You Need to Know About Pasta...
- C Computers and Internet How to Choose a Monitor?...
- H Horoscopes, Magic, Divination Where Did Tarot Cards Come From?...
- S Style and Beauty How to Make Your Lips Fuller? Ideas and Tips for Beautiful Lips...
- C Computers and Internet How to Learn to Type Fast?...
Answers on questions: Physics
- P Physics Two cars start from rest at a red stop light. when the light turns green, both cars accelerate forward. the blue car accelerates uniformly at a rate of 5.2 m/s2 for 4.5 seconds....
- E English Readers can tell that authors are using hyperbole when they? a make fun of themselves. b use exaggeration to make a funny point c say the opposite of what they mean d use...
- M Mathematics At a carnival game, you randomly throw two darts at the board and break two balloons. What is the probability that both balloons you break are purple? Write your answer as...
- F French Can you please help me fill in the work below? thank you! Read the sentences aloud, filling in the blanks with the correct words. Note the hints in parentheses and remember...
Ответ:
(590 - 680) = -90N = 90 newtons backwards.
The car accelerates backwards at the rate of (90/its mass) m/sec-squared.
Another way to look at it: The car's forward speed decreases at that rate.
Ответ:
The image mentioned is in the attachment
a) P = 2450 Pa;
b) P = 2940 Pa;
c) F = 4.9 N
Explanation:
a) Pressure is a force applied to a surface of an object or fluid per unit area.
The image shows a block applying pressure on the large side of the piston. The force applied is due to gravitation, so:
P =
P =
P =
P = 2450 Pa
The pressure generated by the block is P = 2450 Pa.
b) A static liquid can also exert pressure and can be calculated as:
where
ρ is the density of the fluid
h is the depth of the fluid
g is acceleration of gravity
The pressure in the fluid at 50 cm deep is
2940 Pa.
c) For the system to be in equilibrium both pressures, pressure on the left side and pressure on the right side, have to be the same:
F =
Adjusting the units,
= 0.002 m².
F =
F = 4.9 N
The force necessary to be equilibrium is F = 4.9 N.