Physics

6 years ago

In Super Smash Brothers, Peach uses her vegetable attack to hold off Bowser. She throws the turnip

In Super Smash Brothers, Peach uses her vegetable attack to hold off Bowser. She throws the turnip at Bowser and it bounces back. Assume the turnip has a mass of 1.5 kg. When it hits Bowser, it is traveling at 6 m/s and when it bounces back it is tra

cloveb 121 N/A

6 years ago

A 15-kg rocket is traveling horizontally at 40 m/s. The rocket explodes, breaking into two pieces.

A 15-kg rocket is traveling horizontally at 40 m/s. The rocket explodes, breaking into two pieces. The 5-kg piece is traveling at 60 m/s in the same direction as the original intact rocket. What is the velocity of the other piece?

(1) 30 m

cloveb 144 N/A

6 years ago

A 2-kg mass sliding at 5 m/s collides elastically with a 3-kg mass sliding at 2 m/s as shown in

A 2-kg mass sliding at 5 m/s collides elastically with a 3-kg mass sliding at 2 m/s as shown in the diagram. The collision is in a straight line, so it can be considered to me a one-dimensional collision. What is the speed of the 3-kg mass after the

cloveb 175 N/A

6 years ago

While driving down Museum Road, you see Mr. Parks crossing the road. Seeing your opportunity, yo

While driving down Museum Road, you see Mr. Parks crossing the road. Seeing your opportunity, you accelerate your car (1200 kg) from 9.0 m/s (about 20 miles/hour) to 15 m/s. Unfortunately, you do not see another car (mass of 1500 kg) pull out in fron

cloveb 133 N/A

6 years ago

A uniform 2-m long rod has a 3 kg mass. Another mass is attached to the left end of the rod.

A uniform 2-m long rod has a 3 kg mass. Another mass is attached to the left end of the rod. The center of mass of the system is now 25 cm to the left of the center of the rod. What is the value of the attached mass?

(1) 1 kg (2) 2 kg (3)

cloveb 195 N/A

6 years ago

A 3-kg uniform disk has a radius of 0.6 m. An additional 1-kg mass is glued to the edge of the disk.

A 3-kg uniform disk has a radius of 0.6 m. An additional 1-kg mass is glued to the edge of the disk. What is the rotational inertia of the combination if the disk/mass combination rotates about the center of the disk?

(1) 0.90 kg-m2 (2) 0.

cloveb 155 N/A

6 years ago

A 960-N block is suspended as shown. The beam is weightless and is hinged to the wall. The tension

A 960-N block is suspended as shown. The beam is weightless and is hinged to the wall. The tension in the cable BC has magnitude

(1) 1600 N
(2) 720 N
(3) 1200 N
(4) 1280 N
(5) None of these.

PHY2053, Summer 2

cloveb 160 N/A

6 years ago

100-kg thin circular hoop has radius 2 m. Its angular velocity decreases from 20 rad/s to zero in

100-kg thin circular hoop has radius 2 m. Its angular velocity decreases from 20 rad/s to zero in 200 s due to friction. What is the frictional torque acting on the hoop?

(1) 40 N-m (2) 20 N-m (3) 16 N-m (4) 27 N-m (5) None of these.

cloveb 137 N/A

6 years ago

A figure skater is in a position where he spins once in 1.8 seconds. If he pulls his arms and legs

A figure skater is in a position where he spins once in 1.8 seconds. If he pulls his arms and legs in so that his rotational inertia is reduced by one half, how long does it take for him to spin one time?

(1) 0.90 s (2) 3.6 s (3) 1.8 s (4)

cloveb 139 N/A

6 years ago

You swim in a lake to a depth of 2 m. At what depth will you experience twice that pressure.

You swim in a lake to a depth of 2 m. At what depth will you experience twice that pressure. Hint: Do not forget to include the effect of the atmosphere.

(1) 14 m (2) 4 m (3) 10 m (4) 8 m (5) None of these.

PHY2053, Summer 2012

cloveb 126 N/A

6 years ago

A metal has a density of 3000 kg/m3. What is the buoyant force acting on a 15-kg block of metal?

A metal has a density of 3000 kg/m3. What is the buoyant force acting on a 15-kg block of metal?

(1) 49 N (2) 150 N (3) 100 N (4) 440 N (5) None of these.

PHY2053, Summer 2012 Exam

cloveb 165 N/A

6 years ago

As shown in the diagram, a pipe with constant diameter is bent into a large S shape. The top of the

As shown in the diagram, a pipe with constant diameter is bent into a large S shape. The top of the pipe is 6 m above the bottom of the pipe and it is open to the atmosphere. The pressure at the upper end would be one atmosphere. What is the pressure

cloveb 160 N/A

6 years ago

Use Poiseuille’s law to find the pressure gradient (delta P/L) in a 5-cm diameter fire hose

Use Poiseuille’s law to find the pressure gradient (delta P/L) in a 5-cm diameter fire hose delivering water at 2.3x10-2 m3/s. The viscosity of water is 1.0 x 10-3 Pa-s.

(1) 150 Pa/m (2) 6.7 x 10-3 Pa/m (3)

cloveb 122 N/A

6 years ago

Ball A is dropped with zero initial velocity from the top of a building of height 40 m. At the same

Ball A is dropped with zero initial velocity from the top of a building of height 40 m. At the same instant ball B is thrown straight up from the ground. The balls collide after 2 seconds. What was the initial speed of ball B in m/s?

(1) 2

cloveb 138 N/A

6 years ago

A bullet exits a rifle with speed 1500 ft/s. The bullet is shot horizontally from a height of 2 m.

A bullet exits a rifle with speed 1500 ft/s. The bullet is shot horizontally from a height of 2 m. How far does the bullet travel horizontally before it hits the ground? (1 ft = 0.3 m.)

(1) 290 m (2) 340 m (3) 400 m (4) 160 m (5) 90

cloveb 147 N/A

6 years ago

A train travels with constant horizontal velocity of 10m/s relative to the ground. A passenger on

A train travels with constant horizontal velocity of 10m/s relative to the ground. A passenger on the train throws a ball straight up with initial speed of 10 m/s, as measured in the frame of the train. What is the initial speed (in m/s) of the ball

cloveb 121 N/A

6 years ago

City A is 50 km north of city B. A plane °ies with constant speed of 60 m/s relative to the air.

City A is 50 km north of city B. A plane flies with constant speed of 60 m/s relative to the air. The wind blows toward the east with speed 30 m/s. The pilot aims the plane so that it travels along a straight lines from B to A. How much time is requi

cloveb 112 N/A

6 years ago

A projectile is shot at an angle of 20 degrees above the horizontal with an initial speed vo and

A projectile is shot at an angle of 20 degrees above the horizontal with an initial speed vo and impacts a distance of 100 m away at the same height above the ground from which it is shot.
The same gun is now moved to planet Magrathea where grav

cloveb 145 N/A

6 years ago

A scorpion's crawl consists of 3 straightline segments. Segment A is a displacement of 15 cm in the

A scorpion's crawl consists of 3 straightline segments. Segment A is a displacement of 15 cm in the direction 30 degrees north of east. Segment B is a displacement of 20 cm in the direction 45 degrees west of north. Segment C is a displacement o

cloveb 158 N/A

6 years ago

The total weight of an elevator and its contents is 104 N. The tension in the elevator's cable is

The total weight of an elevator and its contents is 104 N. The tension in the elevator's cable is 2:5 £ 103 N. This results in downward acceleration of 7.35 m/s2. An occupant whose weight is 103 N stands on a scale. What is the scale's read

cloveb 156 N/A

6 years ago

How to get the x and y components of 425 km E SE?

How to get the x and y components of 425 km E SE?

Solution:

[img width=350 height=134]https://biology-forums.com/gallery/42/6_13_11_20_6_55_33.

bio_man 1075 N/A

3 years ago

A car of mass 212kg descends a hill of slope 1 in 5. Calculate using an energy method, the average b

A car of mass 212kg descends a hill of slope 1 in 5. Calculate using an energy method, the average braking force required to bring the car to rest from 82km/h in 50m. The frictional to motion is 350N.

bio_man 186 N/A

2 years ago

Write A if the statement is true, but if false, write B and then change the word(s) in the ...

Write A if the statement is true, but if false, write B and then change the word(s) in the parentheses to make it true.The amount of work done on a body equals the change in (kinetic energy) of the body

Seth Eiseb 128 N/A

Seth Eiseb

A year ago

Little Jin rolls his toy car horizontally off the top of a staircase with a speed of 3.0m/s.

1. Little Jin rolls his toy car horizontally off the top of a staircase with a speed of 3.0m/s. Each of the steps is 0.18 m high and 0.30 m wide. Which step does the car hit when it lands?

2. You decide to drive aro

gerrard 1305 1 Reply

duddy

12 years ago

Need help with these!

1. Ana-Lucia needs to sink the 8-ball to win a pool match. She can sink it by hitting the 8-ball so it travels 35° away from the original path of the cue-ball. At what angle does the cue-ball deflect after hitting the 8-ball?

gerrard 1157 1 Reply

12 years ago

More questions

1. A small car uses hydraulic brakes to stop. This means there is a small piston of 6.0 cm radius located behind the brake pedal that pushes down on an incompressible fluid that is then connected to a 2nd piston of radius 33 cm that opera

gerrard 1344 1 Reply

12 years ago

why isn't this correct?

These two moons orbit Saturn at 139350 and 141700 , respectively.
Consider the two in a race around Saturn: In one Prometheus orbit, how far behind is Pandora (in units of time)?

I did:
Using Newton's version of Kepler

Sacredmage69 5061 1 Reply

robertling

12 years ago

Percent error for physic friction lab

So I am not sure if I can do percent error or not.
We were able to find the static and kinetic friction ,but teacher never gave any theoretical value.
Do i just use static and kinetic friction to find the percent error like use static as ex

boing 2377 1 Reply

jusvsjustin

12 years ago

What book should I use for the SATII in Physics?

I have to take the SATII in Physics in about a month, and I need the best book possible in order to get a good score. Are there any recommended companies?

alexalexalexw 1004 1 Reply

12 years ago

Car A is traveling at twice the speed of car B. They both hit the brakes at the

Car A is traveling at twice the speed of car B. They both hit the brakes at the same time and undergo identical decelerations. How does the distance required for car A to stop compare with that for car B?

ppk 1734 1 Reply

12 years ago

A stone is thrown straight up. What is its acceleration on the way up?

ppk 2066 1 Reply

12 years ago

Suppose that an object travels from one point in space to another. Make a compa

Suppose that an object travels from one point in space to another. Make a comparison between the displacement and the distance traveled.
A) The displacement is either greater than or equal to the distance traveled.
B) The displacement

ppk 2179 1 Reply

12 years ago

Which statement below about the distance between the starting and ending positio

Which statement below about the distance between the starting and ending positions and the displacement between the starting and ending positions is correct?
A) The distance between the starting and ending positions is twice the magnitude of the

ppk 3346 1 Reply

12 years ago

Suppose that a car traveling to the East (+x direction) begins to slow down as i

Suppose that a car traveling to the East (+x direction) begins to slow down as it approaches a traffic light. Make a statement concerning its acceleration.
A) The car is decelerating, and its acceleration is positive.
B) The car is de

ppk 1519 1 Reply

sarah!

12 years ago

Suppose that a car traveling to the West (-x direction) begins to slow down as i

Suppose that a car traveling to the West (-x direction) begins to slow down as it approaches a traffic light. Make a statement concerning its acceleration.
A) The car is decelerating, and its acceleration is positive.
B) The car is de

ppk 2285 1 Reply

sarah!

12 years ago

An object is moving with constant non-zero acceleration in the +x-axis. The pos

An object is moving with constant non-zero acceleration in the +x-axis. The position versus time graph of this object is
A) a horizontal straight line.
B) a vertical straight line.
C) a straight line making an angle with the time

ppk 2291 1 Reply

12 years ago

An object is moving with constant non-zero velocity in the +x-axis. The velocit

An object is moving with constant non-zero velocity in the +x-axis. The velocity versus time graph of this object is
A) a horizontal straight line.
B) a vertical straight line.
C) a straight line making an angle with the time axi

ppk 1022 1 Reply

12 years ago

If the position versus time graph of an object is a horizontal line, the object

If the position versus time graph of an object is a horizontal line, the object is
A) moving with constant non-zero speed.
B) moving with constant non-zero acceleration.
C) at rest.
D) moving with infinite speed.
E) none of t

ppk 1376 1 Reply

12 years ago

The area under a curve in a velocity versus time graph gives

The area under a curve in a velocity versus time graph gives
A) distance traveled.
B) displacement.
C) speed.
D) velocity.
E) acceleration.

ppk 2104 1 Reply