10/27/20

A 500 kg weather balloon is designed to lift a 1600 kg package. Remember, Weight = mass * 9.8 and Density = [mass]/[volume of water displaced]
A 500 kg weather balloon is designed to lift a 1600 kg package. Remember, Weight = mass * 9.8 and Density = [mass]/[volume of water displaced] What is the total mass of the balloon and the... more
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10/27/20

Pls help!! its an emergency i need help finding the answer.

In a scale model of the Solar System Earth is 1 inch in diameter. How far would you place Neptune from the Sun in the solar Scale Model? A.  895 meters B.   8.95 meters C.   8.950 kilometers 
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10/27/20

I need help finding the answer to this question for astronomy.

To increase the magnification of an object through a telescope which of the following would you do or request? A. adjust the collimation of the telescope  B. Get an eye piece with a shorter focal... more
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10/23/20

How high above floor can force P act so crate moves without tipping?
crate is 2 ft wide, has a weight of 200 lb. coefficient of static friction is 0.35
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10/23/20

A box is being pushed across a tiled floor with a force of 350 N. If the friction force between the box and the floor is 140 N, what is the magnitude of the net force on the box?
 what is the magnitude of the net force on the box?
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10/23/20

scientific notation

Change the following numbers in decimal notation to scientific notation. 0.00004 0.0025 310000 Change the following numbers in scientific notation to decimal notation. 5.93 x 10-5 3 x 104... more
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10/23/20

physics homework

An object falls freely from rest on a planet where the acceleration due to gravity is 27 m/s2.After 8.8 s, what will be its speed? Answer in units of m/s.
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10/23/20

physics homework
A wrench falls out of the gondola of a balloon that is 540 m above the ocean.Assuming negligible air resistance, what was the wrench’s speed as it hit the water? The acceleration of gravity is 9.8... more
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10/22/20

finding vertical component, magnitude of velocity, angle of impact

An object rolls off a tabletop with a horizontal velocity v0x = 2.5 m/s. The table is at a height y0 = 0.55 m, above the floor. Use a coordinate system with its origin on the floor directly beneath... more
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10/22/20

What's the 1) the acceleration 2) the distance travelled by the car before it comes to rest 3) what is the value of the friction while the car is skidding?
A car of mass 1200kg is travelling along a straight horizontal road at a speed of 20m/s when it brakes sharply then skids. Friction brings the car to rest. The coefficient of friction between the... more
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10/22/20

Physics Question
Two students are on a balcony 18.3 m above the street. One student throws a ball, b1, vertically downward at 13.3 m/s. At the same instant, the other student throws a ball, b2, vertically upward at... more
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10/22/20

Geomatry slope intercept form
Write the slope-intercept form of the equation of each line given the slope and y-intercept. slope = , y-intercept = 5
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10/22/20

Physics is not nice

A ski jumper travels down a slope and leaves the ski track moving in the horizontal direction with a speed of 28 m/s as in the figure. The landing incline below her falls off with a slope of θ =... more
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10/22/20

Physics question
To win the game, a place kicker must kick a football from a point 28 m (30.6208 yd) from the goal, and the ball must clear the crossbar, which is 3.05 m high. When kicked, the ball leaves the... more
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10/22/20

What's the total distance covered? What is the magnitude and direction of her resultant displacement?
A girl delivering newspapers travels three blocks west, four blocks north, three blocks east then 7 blocks south.  
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10/22/20

plane travel 45 m/s drops a package from a height of 110 m. aceleration of grav is 9.8 m/s. Where does pckage strike the ground relative to the point directly below where it was released? units of m.
im literally pulling my hair out at this assignment
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10/22/20

Need help on a physics problem
A cannon sends a projectile towards a target a distance 1360 m away. The initial velocity makes an angle 34° with the horizontal. The target is hit. The acceleration of gravity is 9.8 m/s^2 What is... more
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10/21/20

A firework is shot into the sky. As it is moving up… How the potential and kinetic energies of the firework are changing? What is happening to the total mechanical energy of the firework?
law of conservation of energy
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10/21/20

URGENT HELP PHYSICS CART
In the physics lab, a cart of mass m1 = 0.30 kg moves with velocity v1 = 2.5 m/s on a frictionless track. It collides with another cart of mass m2 = 0.40 kg, which is initially stationary. The... more
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10/21/20

Force of attraction and calculating magnitude
The mass of Bennu asteroid is 78 Billion Kilograms. Its average radius is 250 meters.Mass of Osiris-REx spaceship is 880 Kg, orbiting the asteroid at an average distance of 1800 meters from the... more
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10/21/20

horizontal velocity

During service, a tennis ball is struck at height h = 1.7 m above a tennis court and moves with velocity v0 = v0xi. Assume the ball encounters no air resistance, and use a Cartesian coordinate... more
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10/19/20

physics question
A 3.91-m long thin seesaw with a mass of 44.9 kg has a pivot in its center. Two children with masses 38.9 kg and 30.7 kg sit on extreme opposite ends and start moving up and down. When the seesaw... more
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08/29/20

sam is an astronomer

Sam is an astronomer on planet Hua, which orbits the distant star Barnard. It has recently been accepted that Hua is spherical in shape, although its exact size is unknown. While studying in the... more
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08/29/20

Suppose Halley's comet orbits the Sun every 74 years and has an eccentricity of 0.94. What is the perihelion distance of Halley’s comet in AU?
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08/22/20

how fast is the planet traveling
If a planet was located approximately 28 thousand light-years from the center of a galaxy and orbits that center once every 240 million years, how fast is the planet traveling around the galaxy in... more
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