PHYSICS HIGH SCHOOL

As parallel resistors are added, circuit resistance decreases.
a. True
b. False

Answers

Answer 1
Answer: As parallel resistors are added, circuit resistance decreases. This is TRUE.

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4. Two cars are travelling along a straight road, as shown below. The pass each other at pointB and then continue in opposite directions. The red car travels for 0.25 hours from point Bto point C at a constant velocity of 32 km/hr east. The blue car travels for 0.25 hours frompoints B to point D at a constant velocity of 48 km/hr. How far has each car traveled frompoint B? What is the position of each car relative to the origin, point A?
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What is the most current NASA mission on Mars?

Answers

The most recent NASA mission on Mars is Mars Science Laboratory. Its key component was Curiosity rover.
Rover has celebrated his first landing anniversary yesterday (Martian year, that is 687 Earth days).
Curiosity managed to find traces of water on Mars, so it's possible that there used to be some life on Mars.
Since landing Curiosity moved only about 5 miles form the landing site (it suffered wheel damage). 
The mars rover bot i.e curiosity has been send latestly by NASA on mars. You can also see some pics on net if are doing some project or something.

Which is an example of a wedge?
a. bowl
b. spoon
c. fork
d. knife

Answers

the answer is d.... Knife.

Hope this helped :)

A ski jumper competing for an Olympic gold medal wants to jump a horizontal distance of 135 meters. Thetakeoff point of the ski jump is at a height of 25 meters. With what horizontal speed must he leave the jump?
a. What do you know?
b. What do you need to solve for?
c. What equation(s) will you use?
d. What is the solution to this problem?

Answers

A. We know that the height (h) = 25 m, and the distance (x) = 135 m.

B. We need to find the time flight first (t), then we can find easily the horizontal velocity ( v_(x). )

C. Because this is a projectile motions, so horizontal velocity is constant, but the vertical  velocity is change because of the gravitational acceleration.
So we can use : h = (1)/(2) g t^(2),

Note : Time that will be exist is a time from a land to the takeoff point, that can be called as the time flight.
Then we use, x = v_(x) t, to find the horizontal velocity.

D. We know that :
     h = (1)/(2) g t^(2), so by insert the numbers, and assune that the (g = 10 m/s^(2)), we get that ( t = √(5). )
     After that by using  x = v_(x) t, we can get that v_(x) = 27 √(5)

The mass of a lamb that weighs 110 n is about a. 1 kg.
b. 11 kg.
c. 110 kg.
d. 1100 kg.
e. none of the above

Answers

A lamb that weighs 110 N has a mass of around 11 kg. Hence, option B is correct except B all options are incorrect.

What are Mass and Weight?

The mass of a physical body is a measure of its entire makeup. Inertia, or the body's resistance to acceleration when a net force is applied, is also measured by this term. The strength of a body's gravitational pull on other bodies is also influenced by its mass. The kilogram is the fundamental mass unit of the SI.

In physics and engineering, the weight of an object refers to the gravitational force that pulls on it. Weight is the term used in many widely used textbooks to describe the gravitational force acting on the object. Some people think of weight as a scalar quantity that gauges the gravitational force's strength.

According to the question, the given values are :

Weight, w = 110 N and,

Taking value of g = 10 m/s²

As we know that  :

w = m × g

110 = m (10)

m = 11 kg

Hence, the mass of the lamb will be 11 kg.

To get more information about Mass and weight :

brainly.com/question/28122305

#SPJ5
g = 10 m/s²
w = 110 N

w = m x g
110 = m x 10
110 = 10 m
m = 110/10 = 11 kg

What lines the inferior surface of the diaphragm?

Answers

The roof of the abdominal cavity is inferior to the diaphragm.

Which terrestrial planet experiences the shortest year?A. Mars
B. Earth
C. Venus
D. Mercury

Answers


Being the planet closest to the sun, Mercury must be the one
with the shortest year.  That's how gravity works.
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