driverx14

During the Cretaceous period the Earth's climate was ______________________ relative to Earth's mean global temperature and precipitation values.

A) warm and dry

B) warm and wet

C) cool and dry

D) cool and wet

True of False.

1. For most communities diversity decreases from the poles to the tropics.

2. Scientists have yet to develop an index that addresses the role that interactions between the biological and physical components of the Earth System play in diversity.

Last week i closed the trunk with the bookbag stuck in the lock of the trunk...then i tried to open the trunk using the trunk opener thing near driver seat..it got stuck and wont work. Then i opened the trunk using the remote key and it opened. I looked in the trunk and now the cable is loose and it stop working.

I've dealt with similar problems with others cars..but anyone know how this one in the corolla work? where does the cable go from the trunk opener switch thru where...to where then to the trunk?

Please. Thanks 10 points for a well explained answer.

I just wanted to know what car has an odometer like this one http://s74.photobucket.com/albums/i279/driverx14/?...

I really like the odometer look is. Please help 10 points for right answer.

I want to name my car, but I'm having trouble deciding and finding names. It's a black reddish almost tuned 2003 Suzuki Aerio Sport, its got a red neon and v4 supercharged engine, lots of power. Right now I'm doing work on it so it's undriveable at the moment. It's my first car, and I just fell in love with it at sight,

Any help naming it would be awesome :) ?

My son told me yesterday "Dad, yo are so cheesy". I have no idea what he meant. When he told me this, I was watching football. I don't eat cheese, so I guess it is no cheese, that makes me cheesy Please explain, what makes a person a cheesy parent? Thanks 10 points for great explanation.

Use the data in the table below to find the point between Earth and the Sun.?

Use the data in the table below to find the point between Earth and the Sun at which an object can be placed so that the net gravitational force exerted by Earth and Sun on this object is zero.

__________ m from the center of Earth

Earth Mass 5.98x10^24

Sun Mass 1.991x10^30

Distance from the earth to the sun 1.496x10^11

I have no idea how to solve this. Please help.

A synchronous satellite, which always remains above the same point on a planet's equator, is put in orbit around Uranus so that scientists can study a surface feature. Uranus rotates once every 17.2 h. Use the data of Table 13.2 to find the altitude of the satellite.

______ km

The table is here: http://www.webassign.net/pse/13-2tab.gif

Please help!!!! :) 10 Points for Explanation and correct answer.

Use the data in the table below to find the point between Earth and the Sun at which an object can be placed so that the net gravitational force exerted by Earth and Sun on this object is zero.

__________ m from the center of Earth

Earth Mass 5.98x10^24

Sun Mass 1.991x10^30

Distance from the earth to the sun 1.496x10^11

I have no idea how to solve this. Please help.

A 50.0 kg child stands at the rim of a merry-go-round of radius 2.40 m, rotating with an angular speed of 3.10 rad/s.

(a) What is the child's centripetal acceleration? ______m/s2

(b) What is the minimum force between her feet and the floor of the carousel that is required to keep her in the circular path? ______ N

(c) What minimum coefficient of static friction is required? ______

I tried doing it and I got 3 equations and then I got lost and confused. Please help me, please explain how to get to the correct answers and please also post the correct answers. I will give 10 points :). Thanks.

This is what I got.

For x-component

P(i) = p(f)

(m₁v₁)₀ + (m₂v₂)₀ = m₁v₁ + m₂v₂

m(4.8m/s) + 0 = mv₁ cosѲ + mv₂cosф

4.8m/s = v₁cos33.3° + v₂cosф

v₂cosф = 7.04m/s - v₁cos38.9°-------------->eqn. (1)

For the y-component:

0 = v₁sinѲ + v₂sinф

v₂sinф = -v₁sin38.9°---------->eqn. (2)

Recalling that sinф / cosф = tanф, divide (eqn2) by (eqn1):

Tan51.1 = -0.628v₁ / (4.8m/s – .78v₁)----------->eqn.(3)

The Question:

Two shuffleboard disks of equal mass, one orange and the other yellow, are involved in a perfectly elastic glancing collision. The yellow disk is initially at rest and is struck by the orange disk moving initially to the right at 4.80 m/s. After the collision, the orange disk moves in a direction that makes an angle of 38.9° with its initial direction. Meanwhile, the velocity vector of the yellow disk is perpendicular to the postcollision velocity vector of the orange disk. Determine the speed of each disk after the collision.

Looking for: Smaller Speed_____ m/s and Larger Speed_____m/s.

A 2.10x10^3 kg car starts from rest at the top of a 6.0 m long driveway that is inclined at 19° with the horizontal. If an average friction force of 4.0x10^3 N impedes the motion, find the speed of the car at the bottom of the driveway.

_______m/s

A 4.10-kN piano is lifted by three workers at a constant speed to an apartment 22.1 m above the street using a pulley system fastened to the roof of the building. Each worker is able to deliver 135 W of power, and the pulley system is 75.0% efficient (so that 25.0% of the mechanical energy is lost due to friction in the pulley). Neglecting the mass of the pulley, find the time required to lift the piano from the street to the apartment.

_______ min

A 2.10x10^3 kg car starts from rest at the top of a 6.0 m long driveway that is inclined at 19° with the horizontal. If an average friction force of 4.0x10^3 N impedes the motion, find the speed of the car at the bottom of the driveway.

_______m/s

I just bought a 2005 Evo, and I want to tune it and give it so more power. I want to make it similar to the specs of the Mitsubishi Evo in Tokyo Drift movie.

A high-end gas stove usually has at least one burner rated at 14000 Btu/h. If you place a 0.43 kg aluminum pot containing 2.6 liters of water at 20°C on this burner, how long will it take to bring the water to a boil, assuming all of the heat from the burner goes into the pot?

_________min

How much additional time will it take to boil all of the water out of the pot?

________min

A high-speed lifting mechanism supports a 735-kg object with a steel cable that is 24.0 m long and 4.00 cm2 in cross-sectional area. Young Modulus of steel is 20* 10^10 Pa.

(a) Determine the elongation of the cable.

_____ mm

(b) By what additional amount does the cable increase in length if the object is accelerated upwards at a rate of 3 m/s2?

_____ mm

(c) What is the greatest mass that can be accelerated upwards at 3 m/s2 if the stress in the cable is not to exceed the elastic limit of the cable, which is 2.2 108 Pa?

______ kg

A 10.0 g bullet is fired into and embeds itself in a 2.25 kg block attached to a spring with a spring constant of 16.6 N/m and whose mass is negligible.

How far is the spring compressed if the bullet has a speed of 300 m/s just before it strikes the block, and the block slides on a frictionless surface? (Note: You must use conservation of momentum in this problem.)

______m

A slingshot consists of a light leather cup containing a stone. The cup is pulled back against two parallel rubber bands. It takes a force of 15 N to stretch either one of these bands 1.0 cm.

(a) What is the potential energy stored in the two bands together when a 50-g stone is placed in the cup and pulled back 0.22 m from the equilibrium position?

______J

(b) With what speed does the stone leave the slingshot?

_____m/s