Newest Science Questions | Wyzant Ask An Expert

11/04/20

Use "vector" and "scalar" to describe "speed" and "velocity."

Follows • 1

Answers •1

Science Physics Physical Science Physics B

11/04/20

disk with string urgent help

A solid uniform disk of mass M = 9.8 kg and radius R = 22 cm rests with its flat surface on a frictionless table (i.e., the axis of the cylinder is perpendicular to the table.) The diagram shows a... more

Follows • 1

Answers •1

Science Chemistry Gas Laws

11/03/20

How many grams of pentane are fully combusted by 82.9 L of oxygen at STP

How many grams of pentane are fully combusted by 82.9 L of oxygen at STP (0 degrees C, 1 Atm)?C5H12 + 8O2 ----> 5CO2 + 6H2O

Follows • 1

Answers •1

Science Biology Psychology Sociology

11/02/20

Sociology of Psychology Exam Review

Amy, Juan, and Jenn are interacting. Amy and Juan dislike each other, and the same is true for Amy and Jenn. If the situation is balanced, we would suspect Juan and Jenn toa. like each otherb. none... more

Follows • 1

Answers •1

Science Biology

11/02/20

Gram Staining question

Can Gram staining identify endotoxins?If so, why do we use the LAL procedure to detect endotoxins?Thank you

Follows • 2

Answers •1

Science Math Physics

11/02/20

A 50 kg block is being held at rest by friction on a ramp angled at 25 degrees above the horizontal. What is the magnitude of the force of friction acting on the block?

Follows • 1

Answers •1

Science Physics Ap Physics

11/02/20

Please help me thank you!

A 1.98-kg particle has a velocity (2.01 î − 3.05 ĵ) m/s, and a 3.01-kg particle has a velocity (0.94 î + 5.93 ĵ) m/s.(a) Find the velocity of the center of mass. ______ î + ____ ĵ m/s(b) Find the... more

Follows • 1

Answers •1

Science Physics Ap Physics

11/02/20

Help me please?

Romeo (85.0 kg) entertains Juliet (47.0 kg) by playing his guitar from the rear of their boat at rest in still water, 2.70 m away from Juliet, who is in the front of the boat. After the serenade,... more

Follows • 2

Answers •1

Science Physics Ap Physics

11/02/20

Help please with this problem?

A rod of length 20.00 cm has linear density (mass per length) given byλ = 50.0 + 20.5xwhere x is the distance from one end, and λ is measured in grams/meter.(a) What is its mass? _____g(b) How far... more

Follows • 1

Answers •1

Science Physics Ap Physics

11/02/20

can someone help with this please?

Four objects are situated along the y axis as follows: a 2.04-kg object is at +2.91 m, a 2.99-kg object is at +2.40 m, a 2.55-kg object is at the origin, and a 3.99-kg object is at -0.508 m. Where... more

Follows • 1

Answers •1

Science Physics Ap Physics

11/02/20

How can I solve this?

A 44.4-kg girl is standing on a 161-kg plank. Both originally at rest on a frozen lake that constitutes a frictionless, flat surface. The girl begins to walk along the plank at a constant velocity... more

Follows • 1

Answers •1

Science Math Physics

11/01/20

Solve the following problem and then upload it. A horse pulls a cart up a hill at an angle of 53 degrees. The horse pulls with a force of 2200 N parallel to the ground. The cart has a mass of 1340 kg.

Solve the following problem and then upload it. A horse pulls a cart up a hill at an angle of 53 degrees. The horse pulls with a force of 2200 N parallel to the ground. The cart has a mass of 1340... more

Follows • 1

Answers •1

Science Math Physics

11/01/20

A 1 kg block is being held at rest by friction on a ramp angled at 45 degrees above the horizontal.

A 1 kg block is being held at rest by friction on a ramp angled at 45 degrees above the horizontal. What is the magnitude of the force of friction acting on the block?

Follows • 1

Answers •1

Science Math Physics

11/01/20

You want to pull a 7 kg block up a frictionless ramp with an acceleration of 3.8 m/s2.

You want to pull a 7 kg block up a frictionless ramp with an acceleration of 3.8 m/s2. What force do you need to apply on the block along the direction of the ramp's surface if the ramp is angled... more

Follows • 1

Answers •1

Science Math Physics

11/01/20

A 9 kg block is resting on a ramp inclined at 30 degrees above the horizontal. What is the magnitude of the normal force acting on the block?

Follows • 1

Answers •1

Science Physics Ap Physics

11/01/20

How can I solve this?

Starting from rest, a 62.0 kg woman jumps down to the floor from a height of 0.640 m, and immediately jumps back up into the air. While she is in contact with the ground during the time interval 0... more

Follows • 1

Answers •1

Science Physics Ap Physics

11/01/20

How can I solve this?

A ball falls from height of 19.5 m, hits the floor, and rebounds vertically upward to height of 15.0 m. Assume that m ball = 0.215 kg.(a)What is the impulse (in kg · m/s) delivered to the ball by... more

Follows • 1

Answers •1

Science Physics Ap Physics

11/01/20

How can I solve this?

At one particular moment, a 19.0 kg toboggan is moving over a horizontal surface of snow at 4.10 m/s. After 9.00 s have elapsed, the toboggan stops. Use a momentum approach to find the magnitude of... more

Follows • 1

Answers •1

Science Math Physics Physical Science

10/30/20

What is the car's (centripetal) acceleration?

A race car rounds a curve at 53 m/s. The radius of the curve is 405 m, and the car's mass is 670 kg. (Assume the car's speed remains constant. Take the radially inward direction to be... more

Follows • 1

Answers •1

Science Math Physics Physical Science

10/30/20

What is the radius of its orbit?

A centripetal force of 170 N acts on a 1,500-kg satellite moving with a speed of 4,700 m/s in a circular orbit around a planet. What is the radius of its orbit?

Follows • 1

Answers •2

Science Math Physics Algebra

10/29/20

What is the ball's centripetal acceleration?

A child attaches a rubber ball to a string and whirls it around in a circle overhead. If the string is 0.2 m long and the ball's speed is 16 m/s, what is the ball's centripetal acceleration?

Follows • 1

Answers •1